That's correct. Our Signs.com custom face masks are strictly for general use while out in public. So while some might refer to them as 'covid masks' or 'coronavirus masks', they are not a medical-rated mask so are not intended for use in any of the following settings: (1) in any surgical setting, or where significant exposure to liquid, bodily, or other hazardous fluids may be encountered; (2) in a clinical setting with the risk of high infection due to inhalation exposure; or (3) in the presence of high-intensity heat or flammable gas. Only NIOSH-certified N-95 respirator masks should be used in these settings. We make no warranties, either express or implied, that our custom face masks prevent infection or the transmission of viruses or diseases.