Abstract: A personal entertainment respiratory apparatus provides air to a user to provide a fully immersive entertainment experience. The personal entertainment system may comprise a flow generator for providing the flow of air. A personal spatial respiratory interface may be coupled to the flow generator. The personal spatial respiratory interface may comprise an outlet for the flow generator. The personal spatial respiratory interface may further be configured to direct the flow of air within an ambient breathing proximity of a user. The personal entertainment respiratory apparatus may further comprise a controller and a sensory particle dispenser. The controller and sensory particle dispenser may be configured to selectively activate release of a sensory particle from the dispenser into the directed flow of air in response to an entertainment triggering signal.

Abstract: An essential oil diffusion mechanism, including: a housing having an accommodation chamber; and a separator that divides the accommodation chamber into an upper chamber and a lower chamber and includes a horizontal partition plate and vertical partition plates. The horizontal partition plate defines at least one interconnecting hole. An upper surface of each vertical partition plate is spaced apart from a chamber wall of the upper chamber to form an upper interconnecting aperture. Each vertical partition plate defines an interconnecting reflux hole. A lower surface of each baffling plate is spaced apart from the horizontal partition plate to form a lower interconnecting aperture. The interconnecting hole, the upper interconnecting aperture, the lower interconnecting aperture, and the air outlet are sequentially arranged in communication to form an air outlet channel.

Abstract: A conduit contactor for conducting chemical reactions or chemical extractions between immiscible liquids includes a conduit having a hollow interior, a first open end, and a second open end opposite the first open end; a separator in fluid communication with and proximate the second open end; and a plurality of fibers disposed within the conduit. A total surface area of the fibers per volume of the hollow interior of the conduit is from 100 cm2/cm3 to 490 cm2/cm3.

Abstract: A conduit contactor for conducting chemical reactions or chemical extractions between immiscible liquids includes a conduit having a hollow interior, a first open end, and a second open end opposite the first open end; a separator in fluid communication with and proximate the second open end; and a plurality of fibers disposed within the conduit. A total surface area of the fibers per volume of the hollow interior of the conduit is from 100 cm2/cm3 to 490 cm2/cm3.

Abstract: Provided is a fragrance discharge apparatus. The fragrance discharge apparatus includes one or more fragrance cartridges configured to store a fragrance material; a body to which the fragrance cartridge is mounted; a controller provided in the body to control the discharge of the fragrance material; and a fan configured to mix air and the fragrance material discharged from the fragrance cartridge and make the mixed air flow to the outside of the body.

Abstract: The present invention relates generally developed safety portable incense heater and more particularly to a self-contained incense heater shaped a reversed (L) letter for safely holding, igniting and heating incense (bukhoor wood bricks). The developed safety portable incense heater shaped a reversed (L) letter is going to heat the incense (bukhoor wood bricks) with a certain temperature in order to help the user to direct the smoke flow in the exact direction of the nozzle using the fan thrust. The self-contained developed safety incense heater shaped a reversed (L) letter has a small as pocket size and is portable without any wires to enhance the mobility of the users and the way of using incense or bukhoor wood bricks.

Abstract: A wall mountable essential oil diffuser. The wall mountable essential oil diffuser includes a housing and a wall dock. The wall dock is configured to attach to a surface and releasably receive at least a portion of the housing. The wall mountable essential oil diffuser also includes an aperture, where the aperture is configured to receive an essential oil container and a fan, where the fan is configured to move air through the aperture and into the essential oil container. The wall mountable essential oil diffuser further includes an outlet, where the outlet is configured to receive a mixture of air and vaporized essential oil and allow the mixture to exit the housing and a switch, where the switch is configured to allow a user to turn on and off the fan.

Abstract: A device for releasing volatile substances comprising a container containing the volatile substances located in a fixed position, and means for generating an air flow in order to release the volatile substances, the means for generating an air flow comprising a movable body, the movement of which generates the air flow; at least one magnet arranged on said movable body; and means for generating magnetic flux, the actuation of which causes the displacement of the movable body by means of the repulsion force between said at least one magnet in the movable body and the magnetic flux. The device enables energy consumption to be improved by using magnetically assisted periodic low-consumption actuation.

Abstract: A volatilization device capable of automatic quantitative supplement of liquid includes: a vaporizer, defining an accommodation space and having an opening, air inlet and liquid inlet, the accommodation space being in communication with the opening, air inlet and liquid inlet; a gas supply, connected correspondingly to the gas inlet, allowing the gas supply to input gas to the vaporizer; and a liquid supply, having a liquid container, controller and press piece, the liquid container being connected to the controller and press piece, the controller being connected correspondingly with the liquid inlet, allowing the liquid supply to input liquid to the vaporizer, where the controller controls the start of the press piece to absorb the liquid in the liquid container, and input the liquid to the liquid inlet, and aerosol will be ejected from the opening when the liquid and gas is input to the accommodation space.

Abstract: A gas-fueled portable device for the thermal dispensing of volatile materials such as insect repellents is described. The device employs a pressure regulator to establish gas flow, heat generation, and dispensing temperature at pre-determined optimal values. The automatic operation at pre-determined settings provides simple on/off operation for the user of the device.

Abstract: To provide a portable blower having excellent battery heat radiating properties. A battery mounting portion projects convexly into an air passage. Outer surfaces of a bottom surface section and side surface sections of the battery mounting portion form part of an inner surface of the air passage. The battery mounting portion holds a battery pack at an attitude that a center of gravity of the battery pack is as close to a handle portion as possible. Specifically, the battery mounting portion holds the battery pack in such a manner that the greatest surface of the battery pack having a substantially cubic shape faces the handle portion. The battery mounting portion holds the battery pack in such a manner that a longitudinal direction of the battery pack faces the air passage.

Abstract: An evaporative cooling system includes a primary cooling unit that utilizes a cooling fluid flowing through a primary heat exchange medium to cool supply air flowing past the primary heat exchange medium, a bleed line and a secondary cooling unit disposed upstream of the primary cooling unit with respect to a flow direction of the supply air. The primary cooling unit includes a supply line for supplying the cooling fluid to the primary heat exchange medium, a reservoir for collecting the cooling fluid supplied to the primary heat exchange medium, and a pump for recirculating the cooling fluid collected in the reservoir back to the supply line. The bleed line bleeds a portion of the recirculating cooling fluid from the primary cooling unit. The secondary cooling unit includes a secondary heat exchange medium that receives the cooling fluid bled from the primary cooling unit through the bleed line.

Abstract: A dispensing device for release of a volatile material includes a base, a drive arm coupled to a pendulum based drive mechanism, and a refill coupled to the drive arm. The refill includes a support base, at least one flange, a substrate coupled with the at least one flange, and a use-up cue.

Abstract: Certain exemplary aspects of the present disclosure are directed towards apparatuses and methods which autonomously decontaminate parts. Parts to be cleaned are identified, and based on the identification of the part, a part specific cleaning program is initiated. During the cleaning, the part is manipulated about a gas supply in such a way that the drag force on the contamination particles attached to the part exceeds the contamination particles' surface adhesion force and accordingly is removed from the surface of the part. The removed contamination is then evacuated from the atmospheric environment near the part by a low pressure zone of a second gaseous material near the part.

Abstract: A digital device including a scent emitting unit and a method for controlling the same are disclosed. The digital device includes a display unit for displaying a first image including a first object having a first scent property and a second object having a second scent property, a sensor unit for sensing a distance from a specific body part of a user, a scent emitting unit, and a processor. The processor controls the scent emitting unit to emit any one of a first scent, a second scent or a mixture of the first scent and the second scent according to the distance from the specific body part of the user, and a mixture ratio of the first scent to the second scent in the mixture is changed according to a predetermined condition.

Abstract: A fragrance delivery element may be configured to generate one or more vortices as air flows therethrough. The fragrance delivery element may include one or more airflow apertures, each of which may be configured to receive airflow and convert the airflow to a vortex. As air flows through each airflow aperture and past the fragrance delivery element, fragrance is emitted into the air. Emission of the fragrance may occur without heating the fragrance delivery element or the fragrance. The creation of at least one vortex may extend the distance fragrance is thrown from the fragrance delivery element. Methods and systems for dispersing fragrance are also disclosed.

Abstract: Apparatuses are provided which include one or more germicidal sources, power circuitry coupled to the germicidal source/s, and a shield. The shield and/or at least one of the germicidal source/s are moveable within the apparatus and the apparatus is configured such that the shield and/or the germicidal source/s may be brought in and out of proximity with the other and upon doing so germicide projected from one or more of the germicidal source/s is either substantially contained in the apparatus or is projected exterior to the apparatus for different disinfection modes of the apparatus. The apparatuses include a processor and processor-executable program instructions for activating the power circuitry to operate the at least one germicidal source when the germicidal source is not encased within the apparatus and for activating the power circuitry to operate at least one germicidal source when the germicidal source/s are encased within the apparatus.

Abstract: An air freshener that includes a base and a reservoir is disclosed. The base includes a fan housed therein and one or more base openings extending through a sidewall of the base. The one or more base openings comprise an inlet opening and an outlet opening. The base also includes a coupling receiver positioned on an upper surface of the base. The reservoir includes a reservoir chamber configured to hold a scented liquid therein and an outlet. A coupling is typically coupled to the reservoir adjacent to the outlet and configured to removably couple to the coupling receiver. A filter is coupled to the coupling and in fluid communication with the reservoir chamber. The filter is positioned above the fan when the coupling is removably coupled to the coupling and allows the scented liquid to evaporate therefrom for dispersal through the base openings when the fan is activated.

Abstract: An assembly for evaporation and dispensing of a volatile liquid. The assembly includes an emanator element and a body member. The emanator element has an open structure with a high surface area and is made of a material that is able to absorb and evaporate volatile liquids. The body member includes a tubular portion which has an interior wall for receiving the emanator element, the latter possibly being therein spaced from the interior wall to allow air flow therethrough. A reservoir of volatile liquid and a wicking member are also provided with the wicking element extending from the emanator element into the volatile liquid. The assembly is further associated with an air moving component for directing air flow though the tubular portion and around and through the open structure of the emanator element, thus carrying evaporated liquid volatiles out of the body member.

Abstract: A fan device with air guide function, which contains at least a fan device and is characterized by comprising an air guide frame, wherein the said air guide frame is composed of at least two layers inclined guide which are configured as a symmetrical geometrical shape or at least two layers of arc-overlapped inclined guide which forms a arc-overlapped air guide frame, and are both connected by the securing elements. By the combination of the fan device and both embodiments of the air frame guide, the present invention is applicable to guide the air flow propelled from the fan with a prolonged air path in the space and provides higher air molecule freedom by the effect of more frequent collision which results each loose air molecule has larger surface area existing and moving in the air flow, enables a better indoor air circulation and forms comfortable and nature breeze.

Abstract: A vibration fan includes a base, an electromagnetic actuator and a blade. The electromagnetic actuator is disposed on the base, and includes a movable magnetic component and a fixed magnetic component. The movable magnetic component reciprocates relative to the fixed magnetic component. The blade is connected to the movable magnetic component.

Abstract: A digital device including a scent emitting unit and a method for controlling the same are disclosed. The digital device includes a display unit for displaying a first image including a first object having a first scent property and a second object having a second scent property, a sensor unit for sensing a distance from a specific body part of a user, a scent emitting unit, and a processor. The processor controls the scent emitting unit to emit any one of a first scent, a second scent or a mixture of the first scent and the second scent according to the distance from the specific body part of the user, and a mixture ratio of the first scent to the second scent in the mixture is changed according to a predetermined condition.

Abstract: Apparatus for dissipating a fragrance or malodor eliminator utilizes an infused disc which a user can place in either a rotating or a fixed position. The two states will dissipate a scent/malodor-eliminator at different rates. The disc is mounted on a shaft that secures the disc in an air stream. The shaft defines several positions at which the disc can be placed, as well as structures to retain the disc at a selected location along the shaft. The shaft is part of a support which includes a mechanism for securing the apparatus within the air stream. Air flow causes the disc to rotate and dissipate at one rate or to pass through a stationary disc at a second, lower rate, as a function of the position of the disc on the shaft. A method of imparting a scent or malodor eliminator to air is also disclosed.

Abstract: A method producing a gas flow containing an essential oil vapor includes the following steps: creation of a pressurized gas flow with a controlled flow-rate and a given temperature; and injection into the pressurized gas flow of a liquid composition including at least one liquid essential oil, at a dosed flow rate; whereby the flow rate of the gas flow and that of the liquid composition are controlled such that the gas flow, following injection, has a partial essential oil vapor pressure of at least 20% below the saturation pressure of the essential oil vapor at the temperature of the gas flow.

Abstract: Methods for disinfecting or sterilizing an article are provided. One method includes vaporizing a solution comprising a biocide in a solvent having a first biocide:solvent ratio, directing a flow of the vapor to a first side of a membrane; directing an alternate flow of a gas to a second side of the membrane to increase the first biocide:solvent ratio on the first side to a second biocide:solvent ratio greater than the first biocide:solvent ratio thereby producing a concentrated vapor on the first side of the membrane, and contacting the article with the concentrated vapor for a time sufficient to disinfect or sterilize it.

Abstract: A scent producing vase assembly holds artificial flowers and produces a scent to fully simulate the presence of real flowers in the vase. The assembly includes a vase having a bottom wall and a perimeter wall coupled to and extending upwardly from a perimeter edge of the bottom wall. An upper edge of the perimeter wall defines an opening into an interior space of the vase. A housing is coupled to and extends through the bottom wall of the vase. A scent producing element is positioned in the housing. A channel has a lower end and an upper end. The lower end is in environmental communication with the scent producing element in the housing. An opening extends through the upper end of the channel wherein the scent producing element delivers a scent to ambient air around the upper end of the channel.

Abstract: An apparatus for the decontamination of air, the apparatus comprising a housing (1) having an air inlet (4) and an air outlet (6) with an air passage (2) there between, means (20) for directing a stream of air through the housing, the housing containing a non-thermal plasma cell (30), an ultraviolet emitting device (40) and an ozone depletion catalyst (42), the non-thermal plasma comprising an anode (32), a dielectric (32) and a cathode (33), the cathode being in the form of a meshed enclosure which surrounds the ultraviolet emitting device and ozone depletion catalyst to form a reaction chamber and Faraday cage. The non-thermal plasma cell may also be provided as a columnar cell for forming an array of cells and the dielectric may comprise water droplets to improve the efficiency of the device.

Abstract: A station combines a toilet paper dispenser, dispenser for dispensing hand wipes, a dispenser for dispensing surface antibiotic wipes, and a deodorant feature. The station includes a toilet paper dispenser made from a plastic type material and the toilet paper dispenser may be a single or double roll dispenser. The station cover houses a battery-operated fan that pulls air from inside the dispenser. A tray inside the dispenser holds a fragrance cup holding a quantity of deodorant. The base holds one or two rolls of commercial toilet paper, each of which rolls on a hollow plastic axle to hold a bottle containing wipes. A microswitch may be integrated in the cover to disengage the fan when the cover of the unit is open.

Abstract: A dispenser for a volatile material may be a cover that may be selectively attached to a base to form an internal cavity between them. A method is described for providing a visual indication when an item, such as the cover, needs to be replaced. The cover has a first initial size condition. The volatile material is permitted to evaporate from the cover into the air. The cover is permitted to shrink to a second size condition to provide a visual indication that the cover needs to be replaced.

Abstract: The purpose of the present invention is to provide a method for removing offensive odors from various discharge gases other than exhaust gases of motor vehicle. A method for treating a discharge gas including a discharge-gas treatment device in using an aqueous solution containing strong alkaline electrolyzed water, and directly contacting the discharge gas with the strong alkaline electrolyzed water, having a pH of 9 or higher and an ORP kept at 0 mV or less.

Abstract: Provided is an apparatus for generating perfume for vehicles, and more particularly, an apparatus for generating perfume for vehicles capable of simplifying a configuration and increasing sealing ability to stably control perfume, by easily controlling a flow of air passing through a first perfume generating part and a second perfume generating part using a single rotating shaft.

Abstract: A device comprises a delivery engine comprising a volatile composition and a microporous membrane, and an evaporation assistance element. In some embodiments the device includes a fan is configured to move a volume of air over the microporous membrane to facilitate evaporation of the volatile composition into the atmosphere.

Abstract: An appliance for delivering agent. The agent-delivery appliance includes an agent-releasing mechanism, an air-moving device that generates a flow of air moving from upstream to downstream, and at least one filter. The agent-releasing mechanism includes a chamber configured to release agent into the flow of air generated by the air-moving device. The chamber includes multiple openings, one of which is configured to provide air loaded with agent from the chamber to a first location within the flow of air generated by the air-moving device. At least one filter is located upstream from the first location within the flow of air generated by the air-moving device.

Abstract: The present invention relates to the field of perfumery and more precisely it concerns a device, and the consumer articles associated therewith, for dispensing an active composition into the surrounding space. The device includes an assembly containing a reservoir holding the active liquid to be diffused into the surroundings and a wick-/emitting member structure composed of a wick member and an emitting/diffusion member, the latter having an evaporative surface to be directly exposed to the surrounding space when the device is activated, the assembly being housed in a casing or carried by a supporting frame, the device further including a pivoting member fixed on the casing or on the supporting frame to allow a swinging motion of the assembly and thus forced evaporation of the active volatile whenever desired.

Abstract: A system for fragrancing air includes an adjustable fan that is used to generate an air flow to push atomized fragrance oil from an output orifice of the system. The fragrance in the air is generated from atomized fragrance oil, where liquid fragrance oil can be stored in a cartridge bottle assembly and then atomized with compressed air in a collector assembly in the system. When the system is mounted on a wall or ceiling, the adjustable fan can be used to direct the fragrance downward at any number of angles from the system. The system can be programmed to adjust a fan speed and various settings of the fragrance delivery.

Abstract: An apparatus for emitting a fragrance includes an enclosure that has at least one inlet and at least one outlet. The at least one outlet has a cross-sectional area smaller than a cross-sectional area of the at least one inlet. The enclosure further includes a Venturi-type nozzle that defines the at least one outlet. The apparatus also includes a fragrance source positioned within the enclosure and an air mover positioned within the enclosure. The air mover is operable to draw fresh air into the enclosure through the at least one inlet and drive the drawn fresh air across the fragrance source to transfer fragrance material from the fragrance source to the fresh air to form an air-fragrance mixture. The Venturi-type nozzle of the enclosure accelerates the air-fragrance mixture through the at least one outlet.

Abstract: A fragrance container with a container body provided with a bottom bracket permeable to interior air of the container near a bottom opening. A top cover having a shutter within an interior of the container body near a top opening with a fragrance substance contained in the container body between the bottom bracket and the top cover. An outer peripheral portion of the container body near the bottom opening is covered with an indexing collar for adjusting the degree of opening of an intake port of the container body. A fragrance diffuser includes an air pump, a fragrance container retainer connected to the air pump, and at least one fragrance container received in the retainer. The fragrance containers communicate with each other, wherein each of the fragrance containers contains the same type of fragrance substance with the same smell or a different type of fragrance substance with a different smell.

Abstract: This application is directed to a fragrance dispenser attachably connected to a fan comprising: a housing having openings defined in the housing; a fragrance reservoir included in the housing for receiving a fragrance medium containing a fragrance; a cover operably associated with the opening for restricting airflow into the fragrance reservoir; and, a cover actuator operably connected to the cover having an open position allowing airflow into and out of the fragrance reservoir for dispensing a fragrance and a closed position for restricting airflow into and out of the fragrance reservoir.

Abstract: A modular ductwork assembly decontaminates an air stream circulating within a heating, ventilation and air conditioning (HVAC) system. The assembly includes one or more of (a) an ionizing module for removing particulates from the air stream, (b) a sterilization module for neutralizing airborne pathogens present in the air stream, (c) an ozone treatment module for neutralizing pathogens or odoriferous or gaseous constituents or volatile organic compounds (VOCs) present in the air stream, optionally (d) baffles for slowing and disrupting the flow rate and promoting turbulence in the air stream traveling through the modules, optionally (e) a fan module for directing a treated air stream, optionally (f) an ozone sensor, optionally (g) a monitoring or ozone control means, and optionally (h) a means of delivering and repurposing generated ozone. Each of the modules is arranged substantially adjacent to at least one of the other modules.

Abstract: The present disclosure provides an apparatus for dispensing the fragrance of an odor control substance. The apparatus includes a housing defining a housing interior adapted to receive a refill component. The refill component includes a container with liquid odor control substance and a wick. The refill component is installed from the bottom into the housing for ease of servicing. A pump device in the housing dispenses a dose of the liquid odor control into a wicking area of the refill component. In another embodiment, the refill component includes the pump device. The pump device is installed into the housing when the refill component is replaced.

Abstract: The two-stage air filter is formed of a nonwoven glass fiber first or inlet filter element and a second or outlet filter element formed of nonwoven fiber. The outlet filter element is preferably formed of either polyester material, or a blend of polyester and cotton fiber material. The first or inlet filter element is coarser than the second or outlet filter element, with the first element serving to capture larger particles while allowing smaller particles to pass therethrough to be captured by the finer second filter element. The two filter elements have a continuous and unbroken, homogeneous interface therebetween, with the attachment of the two filter elements with one another being solely at their mutual peripheries by a peripheral frame. Additional air freshening and cleaning, deodorizing, odor neutralizing, scent applying, fungicidal, bactericidal, and/or germicidal chemicals or materials may be applied to either or both filter elements.

Abstract: An apparatus for producing a scent, constituted of: a directional air mover arranged to produce an air flow exhibiting an angular velocity in relation to a central linear axis of the air flow; a plurality of electronically controlled scent producing elements arranged about the produced air flow, each of the plurality of electronically controlled scent producing elements distal of the directional air mover such that scent from any of the plurality of electronically controlled scent producing elements are not deposited on any surface of the directional air mover; and a control unit in communication with each of the directional air mover and the plurality of electronically controlled scent producing elements. Preferably, the plurality of electronically controlled scent producing elements is arranged radially about the central linear axis of the air flow.

Abstract: The present invention relates generally Portable censer bag, where the censer elements are mounted inside the said bag. The portable bag is designed to mount all censer elements inside, so we can take it everywhere and use it easily. The censer bag is power by electric power supply 220 v AC and also, with rechargeable battery 12 v DC through the adapter. Every piece of the censer mounted in a suitable place in the bag according to its size or height. And so, each piece is fixed while carrying the bag. There is a decoration lighting strip surround the bag which also used as indication of the charging of the battery according to light intensity. The Bag made of strong materials to withstand the shocks and coated with a layer of sponge and an artificial skin.

Abstract: A dispensing device includes a housing, a fan, and an annular reservoir. A compound is disposed within the reservoir. The dispensing device further includes a permeable substrate in communication with the annular reservoir for releasing the compound in a first passive state. The compound is released from the permeable substrate according to a uniform diffusion profile. Rotation of the fan causes air to pass over the permeable substrate to release the compound in a second active state.

Abstract: A fragrance enhancer and candle assembly has a candle and a holder for housing the candle. A body is mounted to an upper surface of the holder. A mounting bracket for holding a fan assembly is mounted to the holder. The fan assembly includes a plurality of inverted blades, and a gap is formed between the body and the holder to enable air flow through the body.

Abstract: In accordance with the present invention, a device and method is provided for covering and sterilizing a stethoscope or other medical instrument for safer use. The device comprises a closed housing for shielding the object to be sterilized, a means for receiving the object, a power supply, an ultraviolet light source within the housing, and a switch for controlling that lamp.

Abstract: The present invention supports an airflow register accessory comprising an accessory having an outer and an inner surface and defining vents, a fastening mechanism located on the inner surface of the accessory, and a scented insert component located on the inner surface adjacent and accessorizing the vents. In a preferred embodiment, the accessory may be easily attached to and detached from the room-facing surface of an airflow register. Upon air flow from an HVAC system through the airflow register and airflow register accessory, a pleasant scent may be imparted to the room via release of scent from the scented component.

Abstract: The invention is directed to the application of EMR to one or more elements for the purpose of generating a scent response in humans. Electronic scents may be transmitted on a stand-alone basis, unaccompanied by other sensory stimulus, or as part of a multisensory experience. Examples of multisensory experiences include theatrical motion pictures, television programming, sound recordings, or e-books accompanied by one or more scents. These scents may be coordinated with content elements, such as the scent of horses accompanying the motion picture “High Noon,” the scents of beer and leather accompanying a sound recording of “When You're a Jet” from “West Side Story,” or the musty scent of a cellar in an e-book version of Poe's “The Cask of Amontillado.

Abstract: An air purifier with a tub capable of containing a liquid. Reactor plates are in the tub wherein the reactor plates provide a curvilinear path for air flow with abrupt directional change. A pump is situated to distribute the liquid onto the reactor plates to form a moist surface. An air inlet brings contaminated air into contact with biocatalyst on the moist surface thereby forming purified air. An air outlet discharges said purified air from the air purifier.

Abstract: Methods and devices for emitting volatile materials are disclosed. In some embodiments, methods and devices for emitting two or more fragrance compositions are disclosed. In one non-limiting embodiment of a device, the device has a housing, and the housing is supported on an electrical outlet by a plug at least indirectly joined to the housing. The device contains a first volatile composition and a second volatile composition. The first volatile composition is emitted in an alternating period relative to said second volatile composition. In one embodiment of the method, the volatile compositions are alternately emitted during periods that are greater than 15 minutes and less than 2 hours.