[vanusa]

Can you please clarify:

(1) Which category of mask are you saying provides "no" self protection -- ASTM 3 and N95? (I've read over your post multiple times, and not entirely clear).

(2) So to be clear - are you saying that N95s provide "no" self protection? Not just that they can be misused; or that protecting against surface droplets is more important; but literally "no" self protection?

(3) And if the answer to (2) is yes, can you provide a source or two we can use for further illumination on this topic?

I'm not trying to waste your time, here. I'd actually really appreciate your input.

[prostheticvamp]

Sorry if I was unclear. ASTM3s do not provide self protection. They are estimated to reduce ambient virion uptake by about 2/3 - which just isn’t enough to make a meaningful difference most of the time, as 1/3 of the usual droplet output is already more than is needed to cause infection.

[vanusa]

Thanks for clarifying.