[EBH]

And that any mask can be of benefit!

I think the last paragraph is interesting...where it talks about lowering the viral load to build immunity with a homemade mask?

There’s a tipping point for all masks as well. Notice that the surgical mask can be 80% effective or not.

[Fury]

I think the last paragraph is interesting...where it talks about lowering the viral load to build immunity with a homemade mask?

Yes, that caught my eye. Not sure I would be good at making a homemade mask, but necessity causes a lot of preconceived notions to be re-thought.