Powerful filter, tried to smell the most noxious fumes I had around, not a thing!
It literally feels as if I'm breathing through a hepa filter. Zero smells get through, and I tried smelling bleach, alcohol, Lysol, vinegar, and not a single thing got through. Just clean air.
Just to say, if you ever get these and they are expired, as long as they were stored in a cool dry place, and the pack is sealed, they are fine. A filter doesn't really ever go bad when it's not in use and new. If you aren't gonna use them for a while, either put tape over the intake and leave it on the mask, or put them in a plastic bag.
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