THE N95 is a DUST mask. It filters dust Particles to 0.003 micron..IIRC. The N100 does a little better, BUT they are NOT ANY GOOD for filtering a VIRUS. PLUS the style of mask they are LEAVES your eyes open ANYTHING. A full face mask is the only route that does better. BUT It has to have VIRAL filters in place. DUST filters are useless one them.ð¤ The VIRUS is 100 times or more smaller that the filters threads.