Masks are made to contain droplets and particles you breathe, cough, or sneeze out. If they fit closely to the face, they can also provide you some protection from particles spread by others, including the virus 

Fire Escape Mask is tested at 600 degrees Radiant Heat, is effectively used for Respiratory, Head and Eye Protection. 

Respirator Mask, used by professionals for certain paint spraying, solvents and pesticides, provides at least 95% filtration efficiency against solid and liquid aerosols including oils in additional to using it to help protect against certain organic vapors Designed for performance

A gas mask is an item of personal protective equipment used to protect the wearer from inhaling airborne pollutants and toxic gases. The mask forms a sealed cover over the nose and mouth, but may also cover the eyes and other vulnerable soft tissues of the face.