On a national scale, the best thing is simple surgical masks which prevent you from knowingly or unknowingly transmitting it to others. Those are cheap enough you can toss them several times a day if need be, and much less uncomfortable then a multi layer N95. The thin masks are not much good for protecting yourself, but that’s not their purpose. They are meant to protect others.According to the head of the Chinese center for disease control (a corona virus researcher with impeccable credentials: Oxford, Harvard) said that the biggest mistake the West is making is not wearing masks.
He said: The big mistake in the U.S. and Europe, in my opinion, is that people aren’t wearing masks. This virus is transmitted by droplets and close contact. Droplets play a very important role—you’ve got to wear a mask, because when you speak, there are always droplets coming out of your mouth. Many people have asymptomatic or presymptomatic infections. If they are wearing face masks, it can prevent droplets that carry the virus from escaping and infecting others.
https://www.sciencemag.org/news/202...ly_2020-03-27&et_rid=630684169&et_cid=3263545
But that’s not how Americans in big cities think; in our densely packed cities it’s all about Me, attitude that may be summed as “If other people, especially people in a group I don’t identify with catch it, that’s just fine.”
You won’t get the average American to use an N95 effectively. I’ve seen people wearing them over thick beards, which makes them completely useless, or pushed down to cover their chin. To move it back you’ve got to handle it with both hands, which completely defeats the purpose.