A pump-fan assembly of an air modification device may include a fan, a pump and a disk. The fan may include a central hub disposed on a top surface of the disk, and a plurality of blades extending from the hub towards an outer circumferential edge of the disk. The pump may include a hollow pump body defining an inner tubular passage between an inlet end and a discharge end. An impeller may be arranged at the inlet end and an outlet port may be arranged at the discharge end. The pump and the fan may be coupled at an interface between the discharge end of the pump body and a bottom surface of the disk. The outlet port may be disposed in the interface and arranged to guide a stream of pumped liquid along the bottom surface of the disk. The disk may define a liquid barrier.

A system for decontaminating/neutralizing breathable air and surfaces in an occupied enclosed space, i.e., hydroponic greenhouses, aircraft, rail and road vehicles, in building ducts, or rooms, includes mounting an atmospheric hydroxyl radical generator along an inside surface of an occupied space having respective air inlets and air outlets. The hydroxyl radical generator includes a polygonal housing supporting a plurality of spaced crystal-spliced UV optics medical grade pure quartz, which emit/irradiate ultraviolet in the nanometer wavelength/ultraviolet spectrum of between 100 and 400 nanometers for deactivating and neutralizing atmospheric chemicals and pathogens in breathable air and surfaces. The hydroxyl radicals contact the walls of the reaction chamber housing. The hydroxyl radicals become created and excited to react quickly with impurities including VOC, virus, bacteria and fungi, rendering them inactivated and neutral. The breathable air passes through the polygonal housing and is decontaminated and neutralized of impurities before entering the occupied enclosed space.

A deodorizing attachment for a fan includes a plate having an adhesive backing and a plurality of open-faced cups being disposed upon a face opposite the backing. Each cup has a mesh cover with each cup being configured to removably secure a unit of an air freshener.

A scent delivery assembly that includes a main body portion that defines an interior and includes at least one intake opening and at least one outlet opening, an airflow path that is defined between the intake opening and the outlet opening, a fan positioned along the airflow path, and at least a first cartridge positioned along the airflow path. The first cartridge includes a first cover that is movable between a closed position and an open position and a scent assembly. The scent assembly is not in flow communication with the airflow path when the first cover is in the closed position, and the scent assembly is in flow communication with the airflow path when the first cover is in the open position.

A scent dispenser is provided which comprises a cylinder having a cylinder chamber for receiving a hollow piston which includes a piston body that is closely fitted to the cylinder chamber and is slideable therein, upward to a fully extended position and downward to a fully compressed position. The piston body also includes a cylindrical piston chamber having an opening at a bottom end of the piston body, which body is sized and shaped to receive a scent cell therein. The piston further includes a cover attached to or integral with an upper end of the piston body. The scent cell may be in the form of a substrate of nonwoven fibrous material capable of allowing air to flow readily through the scent cell and through a volatile scented substance contained therein. The scent cell may further comprise a coating material capable of reversibly absorbing or adsorbing the volatile scented substance, while allowing air to flow readily through the scent cell. The coating material covers or coats the substrate and may comprise a substantially hydrophilic foam.

A fragrance dispensing apparatus includes a housing. The housing includes a platform configured to receive an ethylene vinyl acetate (EVA) bead packet. The EVA bead packet remains substantially unheated by the fragrance dispensing apparatus during operation of the fragrance dispensing apparatus. The fragrance dispensing apparatus further includes a lower module. The lower module includes a fan configured to selectively actuate airflow through the EVA bead packet.

A system for decontaminating/neutralizing breathable air and surfaces in an occupied enclosed space, i.e. building, aircraft, vehicle or greenhouse, includes mounting an atmospheric hydroxyl radical generator along an inside surface of the atmospheric hydroxyl radical generator having respective opposite air inlets and air outlets. The hydroxyl radical generator includes a polygonal housing supporting a plurality of spaced crystal-spliced UV optics, which are tubular, medical grade pure quartz optics to emit/irradiate ultraviolet in the nanometer wavelength/ultraviolet spectrum of between 100 and 400 nanometers for deactivating and neutralizing atmospheric chemicals and pathogens in breathable air and surfaces. The hydroxyl radicals contact the walls of the reaction chamber housing. The hydroxyl radicals become created and excited to react quickly with impurities including VOC, virus, bacteria and fungi, rendering them inactivated and neutral. The breathable air passes through the polygonal housing and is decontaminated and neutralized of impurities before entering the occupied enclosed space.

A system for decontaminating/neutralizing breathable air and surfaces in an occupied enclosed space, i.e., aircraft, rail and road vehicles, in buildings and other human occupied spaces, includes mounting an atmospheric hydroxyl radical generator along an inside surface of an occupied space having respective air inlets and air outlets. The hydroxyl radical generator includes a polygonal housing supporting a plurality of spaced crystal-spliced UV optics medical grade pure quartz, which emit/irradiate ultraviolet in the nanometer wavelength/ultraviolet spectrum of between 100 and 400 nanometers for deactivating and neutralizing atmospheric chemicals and pathogens in breathable air and surfaces. The hydroxyl radicals contact the walls of the reaction chamber housing. The hydroxyl radicals become created and excited to react quickly with impurities including VOC, virus, bacteria and fungi, rendering them inactivated and neutral. The breathable air passes through the polygonal housing and is decontaminated and neutralized of impurities before entering the occupied enclosed space.

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.

Apparatuses, systems, and methods are disclosed for a complete diffuser and a two-part decorative diffuser cover. The two-part decorative diffuser cover has an inner cavity shaped to receive the complete diffuser. One part of the two-part decorative diffuser cover is removable couple to the complete diffuser. The two-part decorative diffuser cover forms a single decorative structure when both parts of the two-part decorative diffuser cover are joined together.