A mask for covering areas of a wearer's face includes a mask body constructed primarily of a material that includes a cidal metal or cidal metal alloy wherein the cidal metal or cidal metal alloy is the major structural component of the mask body. The mask body covers at least a portion of the wearer's nose or mouth and nose when worn on the wearer's face. A filtering portion of the mask comprises cidal metal mesh or cidal metal alloy mesh for providing cidal action, air purification, and self-disinfection.