Abstract: A plug-in diffuser, such as a fragrance diffuser, has a configuration that preserves a substance to be diffused, such as a fragrance. A configuration of a body of the plug-in diffuser may prevent the substance to be diffused from contacting an electrical plug of the fragrance diffuser and/or from entering into an electrical outlet. A receptacle in a top of the body of the plug-in diffuser may receive a reservoir of the substance to be diffused. A canopy assembled with the body may provide decorative effects (e.g., appearance, lighting, etc.).

Abstract: Fragrance dispensers with features that are capable of reducing wastage of fragrance, or of conserving fragrance, are disclosed. Such a fragrance dispenser may have a configuration that collects fragrance that is expelled from the fragrance dispenser, but has not vaporized or atomized sufficiently to dissipate into the environment, as well as fragrance that condenses immediately after it has been expelled from the fragrance dispenser. A spill-resistant bottle that may be used with a fragrance dispenser has a shape that orients an opening of the bottle in a somewhat upward orientation to prevent fragrance from spilling out when the bottle is tipped over. Fragrance dispensers with configurations that generate vortices to deliver fragrance into the surrounding environment are also disclosed.