A scent masking device for masking a person's body scent while hunting or performing other outdoor activities related to tracking wildlife. The device includes a portable housing having a plurality of air vents, a power supply designed to provide electrical energy to a control panel, an ozone generator, and a fan. The ozone generator is designed to produce ozone when a charge is applied to a plurality of insulated electrode plates coated with trace amounts of conductive materials exposed to atmospheric gases. The fan is designed to expel the generated ozone through at least one of the plurality of air vents outward and away from the hunter, such that the hunter's scent is masked by the expelled ozone within the immediately surrounding region.

An environment control system utilizes oxygen and humidity control devices that are coupled with an enclosure to independently control the oxygen concentration and the humidity level within the enclosure. An oxygen depletion device may be an oxygen depletion electrolyzer cell that reacts with oxygen within the cell and produces water through electrochemical reactions. A desiccating device may be g, a dehumidification electrolyzer cell, a desiccator, a membrane desiccator or a condenser. A controller may control the amount of voltage and/or current provided to the oxygen depletion electrolyzer cell and therefore the rate of oxygen reduction and may control the amount of voltage and/or current provided to the dehumidification electrolyzer cell and therefore the rate of humidity reduction. The oxygen level may be determined by the measurement of voltage and a limiting current of the oxygen depletion electrolyzer cell. The enclosure may be a food or artifact enclosure.

Air purification devices include an air inlet and outlet, upstream and downstream sections in air flow communication with the air inlet and outlet and a filter removably positioned between the upstream and downstream sections to filter at least pathogens from air being passed through the filter. One or more ultraviolet (UV) illuminating sources may be positioned in at least the upstream section proximate the filter to illuminate at least an upstream surface of the filter with sufficient UV radiation to kill viable pathogens that accumulate on the filter. One or more ozone generating sources may be positioned to generate ozone in sufficient concentrations to kill viable pathogens proximate the device. The UV illuminating sources and ozone generating sources may be positioned to provide a predetermined pressure drop across the sources and air flow pattern proximate the filter, and enable the filter to be removed without handling the sources.

An apparatus may include one or more light components that are configured to emit light to sanitize and disinfect one or more objects included within the apparatus. The apparatus may have an interior cavity at which the light components are located, where the interior cavity is accessible via one or more doors, an opening, a lid, etc. The apparatus may have a conveyor that transports objects from a first end of the apparatus to a second end of the apparatus, where the objects are sanitized during transport. The apparatus may be transitioned from an expanded configuration to an unexpanded/collapsed configuration, and vice versa. The apparatus may be stationary or include wheels or other mechanisms that allow the apparatus to be moved between different locations. Objects that are sanitized by the light components of the apparatus will be free of pathogens (e.g., viruses, bacteria, etc.) that are potentially harmful to humans.

An aspirating smoke detection unit 1 for limiting the spread of airborne contaminants. The aspirating smoke detection unit 1 includes a smoke detector 5 for detecting the presence of smoke particles suspended in air from a monitored region; an ozone generator 7 for producing ozone from oxygen contained in air from the monitored region 20; and an ionizer 8 for ionizing air molecules within air from the monitored region 20. A methods of reducing the spread of airborne contaminants within a monitored region 20 using the aspirating smoke detection unit 1.

An air treatment device includes: a casing having an inlet through which air is drawn, and an outlet out of which the air drawn through the inlet is blown; a blade configured to adjust a direction of the air blown out of the outlet; and a generator configured to generate an antimicrobial element that sanitizes the blade. The blade has a first surface, and a second surface opposite to the first surface. The blade is shiftable between a first position in which the antimicrobial element is provided to the first surface and a second position in which the antimicrobial element is provided to the second surface.

A sterilization and disinfection device includes a housing. A control board, a humidification water tank, a humidification water trough, an ultrasonic humidifier and an ozone water tank are provided inside the housing. The humidification water trough communicates with a humidification outlet through a humidification pipe. A humidification air input channel is connected to a humidification fan connected to a humidification air inlet. The ozone water tank is equipped with an electrolytic ozone generator. The ozone water tank communicates with an ozone gas outlet through an ozone gas output pipe and a mixing chamber. The ozone water tank communicates with a water filling port through a water filling pipe. An ozone fan is installed in an ozone air inlet. The control board is electrically connected to the button display panel, the ultrasonic humidifier, the electrolytic ozone generator, the ozone fan, the humidification fan and the power inlet, respectively.

The field of this invention is technology that supports and enhances natural face-to-face communication. Throughout the recent Pandemic, people have been adversely affected by the loss of real face-to-face human contact. The invention provides one or more safe ‘meeting spaces’ through which persons can talk to each other normally, without the risk of airborne pathogens passing between them. The meeting space of the invention offers no physical barrier such as glass, which would reduce the quality of communication and diminish the user experience. Persons may see and hear each other through the meeting space but pathogens cannot substantially pass through it. Various ways are provided that substantially destroy/inactivate/remove pathogens from the meeting space(s). Some embodiments are sustainable, carbon neutral and solar powered. Others are highly energy efficient. Further refinements create a pleasant environment for conversation and enhance the user experience.

Provided are a catalyst structure for ozone decomposition including a support containing a porous inorganic material, and an α-MnO.sub.2 catalyst located on at least a portion of inner pores and a surface of the support, an air-cleaning method using the same, and an air-cleaning device and an air-cleaning system each including the catalyst structure for ozone decomposition.

An environment control system utilizes oxygen and humidity control devices that are coupled with an enclosure to independently control the oxygen concentration and the humidity level within the enclosure. An oxygen depletion device may be an oxygen depletion electrolyzer cell that reacts with oxygen within the cell and produces water through electrochemical reactions. A desiccating device may be g, a dehumidification electrolyzer cell, a desiccator, a membrane desiccator or a condenser. A controller may control the amount of voltage and/or current provided to the oxygen depletion electrolyzer cell and therefore the rate of oxygen reduction and may control the amount of voltage and/or current provided to the dehumidification electrolyzer cell and therefore the rate of humidity reduction. The oxygen level may be determined by the measurement of voltage and a limiting current of the oxygen depletion electrolyzer cell. The enclosure may be a food or artifact enclosure.