An apparatus for air freshening in an interior occupancy space. The apparatus has a reservoir containing a volatile composition for air freshening and/or malodor removal and a composite membrane in fluid communication with the volatile composition. The composite membrane has a first side facing the reservoir and a second side opposite the first side. At least one of the first side and the second side has a diffusion regulating coating, the diffusion regulating coating including a hydrophobic/oleophobic material having at least one fluoro-alkyl group. The volatile composition includes at least 20% of perfume raw materials by weight of the composition, the at least 20% of perfume raw materials having an average vapor pressure equal to or greater than 0.01 torr at 25 degrees Celsius. The apparatus has an average vapor release rate from 0.2 mg/hr*cm.sup.2 to 5 mg/hr*cm.sup.2 at an air flow rate of 5 m/s and a temperature of 21 degrees Celsius.

A device for generating a scented mist of an atomized liquid fragrance oil includes an atomizer complex, a reservoir assembly, a drainage tube, and a vacuum tube. The atomizer complex can atomize the liquid fragrance oil into a scented mist and deliver the scented mist to air outside of the atomizer complex, where the liquid fragrance oil the fragrance oil that is not atomized into the scented mist delivered to the air outside of the atomizer complex includes collected oil that is collected and drained to a reservoir assembly. A drainage tube extends from a bottom area of the atomizer complex into the liquid fragrance oil. The device can filter the liquid fragrance oil in the reservoir assembly and the collected oil from the atomizer complex that drained down the drainage tube. The vacuum tube can suction the filtered liquid fragrance oil and the collected oil into the atomizer complex for atomization.

A device for evaporating volatile substances including a solid body impregnated with volatile substances and a support for the solid body. The solid body includes a protrusion defining on the inside thereof a housing and the solid body includes a hole, inside of which the protrusion is placed, such that the device further includes a container to house a liquid which impregnates the solid body with volatile substances. The device allows the solid body to be correctly held in the support during the entire useful life thereof. Furthermore, due to the presence of the container with liquid, the user may know if the device is still evaporating the volatile substances correctly or if it must be replaced.

A photosensitizer formulation can be disposed on or in a mesh; net; netting; screen; curtain of strands, fibers, or monofilaments; substrate, personal protective gear, mask, or any other suitable object. The photosensitizer formulation, when in contact with molecular oxygen and activated by light or ultrasound, produces microbicidal singlet oxygen. A variety of different arrangements and applications are described. For example, an air flow device may also be included to generate a flow of air through or over the photosensitizer formulation. A fluorescent formulation may be included to monitor photobleaching. The photosensitizer formulation may be disposed in a concentration gradient to generate antigenic particles by damaging or destroying microbes.

A device for generating a scented mist of an atomized liquid fragrance oil includes an atomizer complex, a reservoir assembly, a drainage tube, and a vacuum tube. The atomizer complex can atomize the liquid fragrance oil into a scented mist and deliver the scented mist to air outside of the atomizer complex, where the liquid fragrance oil the fragrance oil that is not atomized into the scented mist delivered to the air outside of the atomizer complex includes collected oil that is collected and drained to a reservoir assembly. A drainage tube extends from a bottom area of the atomizer complex into the liquid fragrance oil. The device can filter the liquid fragrance oil in the reservoir assembly and the collected oil from the atomizer complex that drained down the drainage tube. The vacuum tube can suction the filtered liquid fragrance oil and the collected oil into the atomizer complex for atomization.

A sanitizing apparatus for sanitizing a fluid is provided. The sanitizing apparatus includes a chamber having an inlet for receiving the fluid thereinto and an outlet for discharging the fluid therefrom, a divider adapted to divide the chamber into an upstream portion in fluid communication with the inlet and a downstream portion in fluid communication with the outlet, a sanitizing light source disposed in the upstream portion and adapted to emit a sanitizing light to sanitize the fluid therein, such that the divider is adapted to obstruct the fluid flow from the inlet to increase the density of the fluid in the upstream portion wherein the fluid is sanitized before being discharged from the chamber via the outlet. A sanitizing method for sanitizing a fluid is provided.

A fragrance dispenser including at least one receptacle having a major open end, with a porous diffuser layer occlusively overlying the major open end of the receptacle. At least a sectional area of the porous diffuser layer is removable.

A method of manufacturing a volatile composition dispenser is disclosed. A container is positioned on a pallet, wherein the container has a bottom wall and side walls extending circumferentially around the bottom wall to define a reservoir and wherein the side walls have a circumferential inner edge defining a reservoir opening. The pallet is moved to a filling station in fluid communication with a tank containing a perfume composition. The perfume composition is dispensed into the exposed reservoir. A vapor impermeable substrate is attached to the planar surface of the container containing the dispensed perfume composition.

The device for diffusing volatile substances includes a container which contains a material with said volatile substances, a porous diffuser which is impregnated with said material with the volatile substances, and a protective sheet which is removed before the first use of the diffusion device. The device also includes a barrier layer equipped with a window, with said barrier layer joined to the container and placed between the porous diffuser and the protective sheet. Due to the presence of the window, the volatile substances are diffused at a high diffusion rate from the moment the protective sheet is removed.

Disclosed is a diffuser of a volatile liquid substance of the type including a container of the volatile liquid substance, closed by at least one membrane permeable to the vapours of the volatile liquid substance, wherein the container is at least partly flexible and contains a plurality of capsules filled with the volatile liquid substance and made of a pressure-breakable plastic material impermeable to liquid and vapour. The permeable membrane is in direct contact with the external environment.