Masks for Smoke and COVID-19 — What Kind Is Best? – KQED

Masks for Smoke and COVID-19 — What Kind Is Best? – KQED

So, What Should I Wear?
If your N95 does have an exhaust valve, you do have a few options. Some, like UCSF pulmonologist Dr. John Balmes, have found creative solutions.
“I put a piece of masking ta…
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