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 lamp assembly having a light source and a sanitizing system. The assembly can be formed of various differing configurations to correspondingly provide one or more systems for sanitizing the surrounding air. Some of the applicable sanitizing systems are configured to be adaptable to provide differing levels of performance in order to provide the warranted sanitizing effectiveness in efficient manners when using the assembly.

A pathogen containment shield comprises a plexiglass barrier to protect both employees on the one side of the barrier from infecting or being infected by customers on the other side of the barrier. The shield includes a vertical portion with an upper outwardly extending portion and side wings extending outwardly from the vertical portion in the direction of the customer. A hood mounted to the upper outwardly extending portion and including a tourmaline and antimicrobial infused filter, a fan designed to direct droplets into the filtration box at the base of the vertical barrier. The hood also includes an auto distance sensor and programmable auto timer to activate the fans and the filtration box when a customer approaches the shield and to turn off the operation a set time after the customer leaves. The filtration box includes a removable tourmaline and antimicrobial infused intake filter and pathogen killing UV-C light.

The use of compositions including two or more cucurbiturils in counteracting malodour in a moist environment. The two or more cucurbiturils are selected from CB[5], CB [6], CB [7] and CB[8]. Also provided is a method for counteracting malodour in a moist environment, including application of a composition including a mixture of two or more cucurbiturils selected from CB[5], CB[6], CB[7] and CB[8].

A fluid disinfector includes one or more disinfection units connected in series along a flow path of a fluid to be disinfected so that the fluid to be disinfected can only enter one disinfection unit after exiting from an adjacent preceding disinfection unit. The disinfection unit includes a matter layer, a light layer and a germicidal light source for generating germicidal light. The matter layer is made of porous material having a first surface to receive the fluid to be disinfected and to intercept and capture pathogens from the fluid to be disinfected; the light layer is a space permeable to the fluid and transparent to the germicidal light. When in operation, the light layer contains the germicidal light impinging on the first surface of the matter layer.

In various embodiments, an air purifier capable of destroying and deactivating airborne contaminants such as SARS-CoV-2 is described. The air purifier comprises a photocatalytic system comprising at least one photoactivated semiconductor photocatalyst and a lamp configured to irradiate and excite the at least one photoactivated semiconductor photocatalyst to generate reductive and/or oxidative reactive species from oxygen and/or water on the photocatalyst surface. In various embodiments, the photocatalytic system comprises a stack of PCB cards, each card having a photocatalytic layer disposed thereon, or a 3-dimensionally ordered macroporous (3-DOM) structure comprising an open cell lattice.

A virus elimination assembly for sterilizing air includes a base that is hollow. An intake vent is pivotally coupled to the base to direct air into the base. A canister is coupled to the base and the canister is in fluid communication with an interior of the base. A filter tray is slidably positioned in the canister and a filter is integrated to pass air therethrough. A blower tray is slidably positioned in the canister and a blower is integrated therein to blow air when the blower is turned on. A light tray is slidably positioned in the canister and a light emitter is integrated therein to eliminate viruses and bacteria. An exhaust vent is pivotally integrated into the canister to direct the air that has been sanitized by the light emitter out of the exhaust vent.

An essential oil reflux-type atomizer comprising the following structures: chassis, housing, atomization chamber, gas pump, gas tube, gas nozzle, oil nozzle, and filter atomization mechanism. The filter atomization mechanism is installed in the housing and has an upper filter and a lower filter. The essential oil atomizer can be improved efficiency and reduced noise level.

A lighting apparatus includes a fan device, a driver, a connector and a light module. The lighting apparatus is installing to a cavity of a ceiling. The fan device has a fan and an air channel. The fan is placed in the cavity. The driver converts an external power source to a first driving current supplied to the fan device. The connector is fixed to the fan device. The first light source receives a second driving current provided by the driver. The air channel has an entrance between the main housing and the fan device. The entrance is visually concealed by the main housing when a viewer stands below the lighting apparatus.

An airborne pathogen extraction system that provides for continuous airborne pathogen particle extraction from a specifically targeted area in a room or a specifically targeted area proximate to a user. The pathogenic particles are filtered and/or disinfected before the air is returned proximate to the originating location, or are directed an area away from the user(s). The airborne pathogen extraction systems and methods lower the chances of contagion or infection from airborne pathogens, such as viruses.