An aroma diffuser device for diffusing selected scents into the airspace of interior habitable spaces is disclosed. The disclosed device includes multiple diffusers for diffusing multiple scents into a fan-induced airstream. Two, three or more diffusers can be included in and/or upon the device.

Methods and systems described perform air cleaning and/or sanitization in a heating, ventilation, air conditioning, and/or refrigeration (HVACR) system by detecting a concentration of airborne contaminants in a space serviced by the HVACR system. The detected concentration of airborne contaminants is determined whether it exceeds a threshold relative to a capacity of a first air cleaner. When the detected concentration of airborne contaminants exceeds the threshold, a second air cleaner is selected and enabled to be activated in the space. When the detected concentration of airborne contaminants does not exceed the threshold, the first air cleaner is selected and enabled to be activated in the space. The first air cleaner has a cleaning material different from the second air cleaner, and the first air cleaner, relative to the second air cleaner, treats the space at a lower concentration of airborne contaminants. The second air cleaner includes specifically designed cleaner modules.

A perfumed composition in a solid or semi-solid form, where the composition includes from 5 to 40% by weight of the total weight of the perfume composition, and from 10 to 15% by weight of the total weight of the trihydroxystearin composition. The composition includes a solvent, preferably triethyl citrate. One or more embodiments relate to the field of perfumes and perfumed compositions. It finds advantageous application in the field of fine perfumery, cosmetics, hygiene products to be rinsed off or not, and home fragrances or indoor deodorisers or air fresheners.

The present invention relates to an evaporation retardant membrane for odorant compositions, which comprises a sheet-like support permeable to odorants, and at least one polymer coating arranged on one surface of the sheet-like support, wherein the sheet-like support is permeable to fragrances and where on at least one surface of the sheet-like support at least one polymer coating is arranged only on a part of the surface of the sheet-like support, such that the total coverage of the surface by all polymer coatings is 10 to 90%, and each quarter square centimeter of said surface is covered by a polymer coating to an extent of at least 10%. The present invention also relates to a device for controlled release of an odorant composition comprising a container for receiving an odorant composition, where the container has an opening, which is covered by the evaporation retardant membrane and the use of such a device for controlled release of odorant compositions.

The present invention relates to an evaporation retardant membrane for odorant compositions, which comprises a sheet-like support permeable to odorants, and at least one polymer coating arranged on one surface of the sheet-like support, wherein the sheet-like support is permeable to fragrances and where on at least one surface of the sheet-like support at least one polymer coating is arranged only on a part of the surface of the sheet-like support, such that the total coverage of the surface by all polymer coatings is 10 to 90%, and each quarter square centimeter of said surface is covered by a polymer coating to an extent of at least 10%. The present invention also relates to a device for controlled release of an odorant composition comprising a container for receiving an odorant composition, where the container has an opening, which is covered by the evaporation retardant membrane and the use of such a device for controlled release of odorant compositions.

A surface cleaning device includes a nozzle and an odor dial assembly. The nozzle includes a nozzle housing and a dirty air passageway. The odor dial assembly include a fragrance member and a dial body configured to be removably coupled to the nozzle housing. The dial body at least partially defines a fragrance cavity configured to at least partially receive the fragrance member and a fragrance passageway extending therethrough. The odor dial assembly is configured to transition between a plurality of user-selectable positions to adjust an amount of fragrance particles released by the fragrance member into the dirty air passageway.

A surface cleaning device includes a nozzle and an odor dial assembly. The nozzle includes a nozzle housing and a dirty air passageway. The odor dial assembly include a fragrance member and a dial body configured to be removably coupled to the nozzle housing. The dial body at least partially defines a fragrance cavity configured to at least partially receive the fragrance member and a fragrance passageway extending therethrough. The odor dial assembly is configured to transition between a plurality of user-selectable positions to adjust an amount of fragrance particles released by the fragrance member into the dirty air passageway.

A type of fragrant eyeglasses is revealed. The fragrant eyeglasses include an eyeglass body and a nose bridge which is arranged at the eyeglass body and provided with a mounting space for mounting fragrance tablets. At least one air inlet and at least one air outlet for guiding air flows are disposed on a front side and a rear side of the mounting space respectively. Thereby the fragrance tablet mounted in the nose bridge is just adjacent to the user's nose when the eyeglasses are fitted on bridge of user's nose by the nose bridge. Thus the user smells scents emanated from the fragrance tablet and feels refreshing and soothing. The air inlet and the air outlet not only help emanation of scents from the fragrance tablet, but also guide the scents to spread along with air flows induced by movements of people who while walking or riding bicycles.

An air freshener has a carrier with a pair of tabs defining a gap. A center tab extends from the pair of tabs and defines a longitudinal axis. At least one scented body is carried by one of the pair of tabs. The pair of tabs and the at least one scented body extend laterally with respect to the longitudinal axis of the center tab in opposite directions. The pair of tabs and the at least one scented body have a lateral width greater than a longitudinal depth.

An air freshener has a carrier with a pair of tabs defining a gap. A center tab extends from the pair of tabs and defines a longitudinal axis. At least one scented body is carried by one of the pair of tabs. The pair of tabs and the at least one scented body extend laterally with respect to the longitudinal axis of the center tab in opposite directions. The pair of tabs and the at least one scented body have a lateral width greater than a longitudinal depth.