It has already been established how N95 and N100 masks do not block smoke or any other types of gasses. They will however block viruses and other airborne contaminants.

May I suggest reading before jumping to conclusions.

Jeanette Isabelle
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I'm not sure whose twisted idea it was to put hundreds of adolescents in underfunded schools run by people whose dreams were crushed years ago, but I admire the sadism. -- Wednesday Adams, Wednesday