[Reedx]

Would just note that it depends on the mask. They often have a large amount of leakage, and can give a false sense of security.

https://www.reuters.com/article/us-health-airpollution-masks...

[Panino]

I notice an obvious and immediate improvement wearing a mask in Asia. And according to this article, the masks tested were effective in reducing the amount of pollution inhaled. "Don't let the perfect be the enemy of the good."

[bfred_it]

A couple of hours in Manila’s traffic on a motorbike coated my ears with black dust. If you can even just reduce that intake by 30%, your lungs will be happier.