from woodworking / dust collection
https://www.amazon.com/3M-Removal-Respirator-Medium-6297PA1/dp/B00063Y25U/ref=dp_ob_title_ce
People don't understand that you're trying to keep invisible to the naked eye... proteins from getting on / in you.
I saw someone wearing a surgical mask yesterday that had 1" full gaps around the side of it... just because you have something on your face doesn't do **** to keep that off of and around your mucous membranes.
People are stupid.