Do you agree with the theory that says because the virus is smaller than the smallest particle the mask can block effectively, that the mask offers no protection from the virus?
Yes, that is correct.
I read some lib articles in USA Today etc. that purported to debunk that. The idea is that the virus is always part of a larger particle of water vapor. ie saliva so the mask will block it.
I saw through that logic in about two seconds. The mask will become saturated with water vapor very quickly. Virus will become concentrated on the mask as more is deposited with each exhalation. The moisture will evaporate from the mask. If it didn't it would be literally dripping in about 45 minutes. That moisture will drag the virus through the mask and evaporation will carry the virus into the air. Where it will rapidly drop to the ground.