Any "mask" that is dense enough to stop a virus, also won't let enough air through for you to live on.
About Jr. High, we learned a virus is so small it can pass through an unglazed China plate.
Trying to stop a virus with any face mask you can breathe through is like putting a screen door on a submarine.
The virus needs to be on something you breathe out to move around. Hence droplet precautions working.
Again, how can I use VAPOR filters in my shop to weld galvanized if we don't have masks that stop droplet or airborne?
😂
