Wanna see a video of the surgeon general turning a t-shirt and rubber bands into PPE? Public health measures are always reductive. I mean, we're at "yeah we know we told you to stop asking for masks because they don't do anything that was mostly because we want the doctors to have them more but actually Jared Kushner has been hoarding them in a warehouse and seizing shipments going to states because he's an asshole so I guess yeah wrap your fucking underwear around your head."
It's as simple as "I want a layer or two of material to block the passage of covid-19 particles between you and I". Why did it take us this long? Because we're pretty dumb. Are there complications related to fluid flow and turbulence? Yes, but such considerations still favor a reverse-Cornholio configuration, if all else fails. But wait! Be careful: At least do better than this guy:
Awww man my first time being Manning-faced on Hubski.
I’m not not a basic internet bitch edit: no wait there are two "not"s in the above sentence, but I didn't see the second one (?) when I re-read my own comment