A pathogen protection device includes an enclosure made of air-tight material configured to seal a user's head from the outside and allow the user to see through; and a filter is disposed on a wall of the enclosure to allow filtered air to enter and exit the enclosure.

A full face mask equipped with an inlet air filter includes a transparent visor, a frame or strap, preferably a rubber gasket designed to guarantee water tightness and appropriate straps to fit the mask on the face. The mask has a fitting which engages on the upper part of the mask in an inspiration mouth and which allows the flow of air to enter the space created between the frame and the viewer. This fitting includes a coupling portion to this mouth and on the opposite side a seat for the attachment of a filtering system of the air entering the mask.

A full face mask equipped with an inlet air filter includes a transparent visor, a frame or strap, preferably a rubber gasket designed to guarantee water tightness and appropriate straps to fit the mask on the face. The mask has a fitting which engages on the upper part of the mask in an inspiration mouth and which allows the flow of air to enter the space created between the frame and the viewer. This fitting includes a coupling portion to this mouth and on the opposite side a seat for the attachment of a filtering system of the air entering the mask.

A breathing system for removing harmful contaminants, such as microbes and volatile organic compounds, is provided. The breathing system includes a face mask, an inhalation limb, and a plasmonic device. As a contaminated gas flows through an internal chamber of the plasmonic device, the contaminates are oxidized. Specifically, the internal chamber includes a source of photons spaced apart from the nanostructure. The nanostructure is coated in a plasmonic layer, including noble metal nanoparticles. The plasmonic layer is protected from oxidation through a photocatalyst layer disposed thereon.

A breathing system for removing harmful contaminants, such as microbes and volatile organic compounds, is provided. The breathing system includes a face mask, an inhalation limb, and a plasmonic device. As a contaminated gas flows through an internal chamber of the plasmonic device, the contaminates are oxidized. Specifically, the internal chamber includes a source of photons spaced apart from the nanostructure. The nanostructure is coated in a plasmonic layer, including noble metal nanoparticles. The plasmonic layer is protected from oxidation through a photocatalyst layer disposed thereon.

A helmet includes a helmet body and a gas detection and purification device. The gas detection and purification device in includes a body, a purification module, a gas-guiding unit, a gas detection module, and a power module. The gas detection module calculates the gas detection data obtained by the gas detection module so as to control the gas-guiding unit to start or stop operation based on the gas detection data. When the gas-guiding unit is in operation, the gas-guiding unit guides the gas into the body and to pass through the purification module for being filtered and purified to become a purified gas, and the gas-guiding unit discharges the purified gas out of the body to the nose portion, or the mouth portion, or both the nose portion and the mouth portion of the wearer for providing the wearer with the purified gas to breath.

A helmet includes a helmet body and a gas detection and purification device. The gas detection and purification device in includes a body, a purification module, a gas-guiding unit, a gas detection module, and a power module. The gas detection module calculates the gas detection data obtained by the gas detection module so as to control the gas-guiding unit to start or stop operation based on the gas detection data. When the gas-guiding unit is in operation, the gas-guiding unit guides the gas into the body and to pass through the purification module for being filtered and purified to become a purified gas, and the gas-guiding unit discharges the purified gas out of the body to the nose portion, or the mouth portion, or both the nose portion and the mouth portion of the wearer for providing the wearer with the purified gas to breath.

A combination air filter and protective mask includes an air pump; a first line having a first end connected to the air pump; an air filter connected to a second end of the first line; a second line having a first end connected to the air filter; a connecter connected to a second end of the second line; a third line having a first end connected to the connector; and a full face mask connected to a second end of the third line.

A combination air filter and protective mask includes an air pump; a first line having a first end connected to the air pump; an air filter connected to a second end of the first line; a second line having a first end connected to the air filter; a connecter connected to a second end of the second line; a third line having a first end connected to the connector; and a full face mask connected to a second end of the third line.

There is disclosed breathing apparatus equipment which may be in the form of a waist mountable manifold. The breathing apparatus equipment comprises a manifold having a manifold inlet port for a source of breathable gas and at least one manifold outlet port for delivering breathable gas to a user. The equipment further comprises a strap arranged to be worn by the user, and a holder coupled to the strap and having a socket. The socket is configured such that the manifold can be removably located within the socket in multiple orientations.