To mask or not to mask

I bought a box of disposable, one use, non-washable masks yesterday--50 for $25. I am concerned that they were made in China, but I'll keep a sack in the glove compartment instead of a used one on the passenger seat. Don't want to panic any people, and the evidence doesn't seem to be conclusive that it makes any difference. But I consider it polite like sneezing into a hanky, or using a napkin at dinner. Considering that most of us are self-centered (just look at all the selfies or dinner photos on social media) the story should have been that we protect ourselves, not others, by wearing a mask. And if we wait for the research to be published, it will probably say that.

https://fee.org/articles/stop-forcing-people-to-wear-masks-over-covid-19-fears/?

This is a very small study—4 patients: https://www.acpjournals.org/doi/10.7326/M20-1342