Originally Posted By BZH
What? Common sense tells you exactly why it is true. When you breath through a mask it diffuses your breath preventing it from effectively traveling the 6 foot social distancing. With a mask your exhaled breath stays in a cloud around you. Without a mask you shoot your breath out into the world. On inhaling, diffusing it really doesn't matter... it all goes down your throat regardless

That is the theory and there is some evidence that it is true, but the effectivity has not been proven. Common sense: yes.... proven science: no.
Maybe I've misunderstood the way the masks are supposed to work. I'm willing to admit I'm wrong...

BUT, I thought the theory behind the mask was not diffusion, but filtration. Perhaps we should be specific about the type of mask. I'm thinking about the N95 masks. Isn't the "95" an indicator of the percentage of airborne particles effectively filterd?
_________________________
The journey is more important than the destination.