An Industrial hygienist's view of wearing masks
(rumble.com)
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I'm not defending masks, but it is possible for filters to capture particles smaller than their pores. An example we all know: The finger guards on a fan are far too large to filter dust. But clearly they do "filter" the air slightly because some dust is removed from the air and stuck to the grille. A HEPA filter has a very large surface area so it is effective against removing small particles like viruses. HEPA filters are tested with 0.3 micron particles because that size is the most difficult to remove. Leakage around the sides remains a problem.
If the masks do filter effectively, that's good until you breathe in and pull that stuff back into your lungs. If you're sick self isolate and do not wear a mask.
My big beef with her is nobody is going to look up the Foegen Effect if they don't know how to spell it. Overall, this video would be good material to cut into a 1 minute short.
True that dust clings to a fan shroud, but you have to consider all the factors, static, oil in the air, moisture in the air, etc. it’s hard to say that this is conclusive evidence of mask effectiveness.
Besides that, a fan is a 1-way movement of air, many fans have a self clean mode that actually works fairly well (it spins in reverse). So in effect, by normal breathing, you are diminishing that effect of static cling filtration. Additionally, the static cling effect could actually worsen it, because now you have a larger surface area to suck through, and less chances for it to escape.
Sickness can be made worse by being social, but generally it depends on each person and how they are wired. If staying home makes you feel sad and depressed (especially if alone), you’re health is less likely to improve, whereas if you enjoy solitude, it would probably help you to avoid people.