At .003 microns, the Wuhan CCP Virus goes right thru any mask made, even paint shop respirators.
A respiratory aerosol that carries the 0.003 micron virus is quite a bit larger.
But dont let that stop you from blathering.
Bzzt. (Mostly) wrong answer. Most virus particles that are emitted from people are attached to spittle or similar excretions much larger than 1 micron. And a “good” mask will block those secretions from going all over into an environment that an infected person is in (grocery store, mall, restaurant, etc).
You’re correct, however, that most masks won’t block virus particles that are say, exhaled and NOT attached to a larger molecule. But if we can reduce say, 70-90% of virus particles, it’s a hell of a lot better than ZERO percent, which is what you get when people argue about and ignore the science behind masks.