Abstract: A pipe comprises a combustion chamber with vents, the combustion chamber able to receive a cigarette; an inhalation path for drawing smoke from the combustion chamber through the bowl vents during inhalation; an exhalation filter; and an exhalation path for channeling exhaled smoke through the exhalation filter during exhalation.

Abstract: A fan-assisted ashtray includes a hollow body having a lid for closing an open top thereof; a tray member for containing ash from a smoker's article; a filter member located below the tray member; and an electric fan located below the filter member for drawing air and smoke into the filter member and for exhausting air to the exterior of the body through a vent. The filter member extends across an entire horizontal sectional area of the body.

Abstract: A purification system for preventing secondhand tobacco smoke from reaching an ambient environment thereabout. Two components of the system include a smoke entrapment intake hood for aggregating the secondhand smoke and an electrostatic suction filter assembly in communication with the entrapment hood for extracting aggregated smoke from the hood, removing untoward particulate from the smoke, and releasing resulting clean air to the environment. The filter assembly includes at least one particulate filter for collecting smoke-borne particulate and at least one appropriately charged or grounded plate for electrostatically collecting charged smoke-borne particulate. An exit port from the filter assembly permits the release of so-cleaned air to the environment as a negative-ion emitter, positioned immediately inside the exit port, introduces charged ions into the cleansed air.