This mask is made of fiber cloth and treated with .Conventional masks currently available in the market, only filter out but not eradicate bacteria and viruses that deposited on the masks through air. It is the possible risk of infection through careless contact with those harmful pathogens remained on the surface of the untreated masks.With treated masks, those harmful pathogens will be eliminated immediately upon physical contact with the mask, as proven in numerous studies both in laboratory and the filed experiments. One of the compounds used in the treatment has been proven efective to eradicate non-pathogenic H7N2 avian influenza virus, Coronavirus and other types of viruses. Through covalent bonding,will be affixed andremained on the surface of the mask for the life of the mask. This mask can be washed up to 50 times and proven to still maintain 90% of its ability to eradicate harmful pathogens.