The KN95 / FFP2 mask is used to protect itself in the event of contact with pathogens present in aerosols produced by infected individuals (eg tuberculosis) or during laboratory procedures liable to produce infectious aerosol. It is made of polypropylene. 
 Recommended by health organizations, this FFP2 mask will allow you to effectively fight against fine particles, dust, pollution and pathogens such as bacteria and viruses. 
 It generates static electricity, which is effective in stopping very small particles (> 0.3 microns). 
 In addition to electrostatic attraction, it uses the principles of diffusion and filtration.