The question is not of distance. The question is of permeability.
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No. The question is do masks curb the infection rate.
But to the question of permeability, it’s obvious the mask is less permeable than no mask as the smoke escapes through the sides. And in all liklihood travels nowhere near the distance it would if there was no mask at all. But the only way to prove that would have been to exhale smoke with no mask.
Which for some reason he doesn’t do. That would have been the standard to judge his experiment by. The greater distance covered by the smoke, the greater the chance of infecting those nearby.
The world is full of bacteria and viruses and garbage and microbes. A year ago we traveled the not so sterile world without concern. Why have we become scared of what God has already prepared us for with an immune system to deal with this?
Dont bother to answer. Its either fear or agenda. And the fear can be dealt with on an individual basis using common sense, not national mandates. The agendas have no place in our free society.