Because TB is a bacteria, the ratio of size to inertial mass is less favorable for filtering and a P100/P3 filter is better suited for this. An elastomer also has a better seal on the face.

Universal pre-factory reset tool.

for pathogen protection. An elastomeric mask with P3 (=P100) filters and goggles to put over my corrective glasses where I come close to other people. This offers so much risk reduction that it actually doesn't matter whether someone else around me wears a respi or not. Of course it is ->

I can't leave my safe house without the protection of my mask. Almost my entire social life is digital. I have heard from several people "I couldn't live like this, I would end it." (such statements don't really help...) But I enjoy the things I can still do! To the zoo for example.

Before electronic detection equipment, canaries were used to detect mine gas, among other things. If the canary started acting strange, it was time to get out. To save the poor animal, the oxygen tank was opened. We are the canaries of the 21st century, but nobody listens to us...