Results: Two dishtowels can be as effective as an n95 mask
smartairfilters.com
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But I think the broader message should be: Wearing a mask in public, regardless of what material it's made from, is better than nothing.
It offers at least some protection to the wearer, and it also offers at least some protection to people around the wearer.
In several Asian countries, it is totally normal for people to wear masks in public to protect themselves and others from infectious diseases.
Perhaps this pandemic will help normalize the practice in the US. I really hope that resistance because of dumb cultural factors doesn't lead to more severe outcomes. Sure, bud, you look silly in a mask, but better silly than on a ventilator.
The common surgical masks and N95 masks are two very different things.
Based on particle capture and breathability, the researchers concluded that cotton t-shirts and pillow cases are the best choices for DIY masks.