You don’t see 100% infection rates when a positive person is in a a room. Reducing the amount of particles inhaled in such circumstances must be of use. You wo

You don’t see 100% infection rates when a positive person is in a a room. Reducing the amount of particles inhaled in such circumstances must be of use. You would on the other hand expect a 100% fatality rate if you fired 123,000 bullets at each person in a room. So your analogy is faulty.