That's why I said "help" and N95 at a "minimum". Respirators filters work like a stack of matrices. The openings can be bigger than the actual particles they can stop. They can stop a certain percentage of smaller particles but a certain amount will be allowed to bounce around and make its way through without getting caught. I'm not sure what it is for viruses but even at say 20% it would "help".

That's why I said "help" and N95 at a "minimum". Respirators filters work like a stack of matrices. The openings can be bigger than the actual particles they can stop. They can stop a certain percentage of smaller particles but a certain amount will be allowed to bounce around and make its way through without getting caught. . I'm not sure what it is for viruses but even at say 20% it would "help".

That's why I said "help" and N95 at a "minimum". Respirators filters work like a matrix. They can stop a certain percentage of smaller particles. I'm not sure what it is for viruses but even at say 20% it would "help".