Face Masks Can Help Filter Out Bad Air – If Worn Correctly
3,522 views · Published 17 November 2018 · 2:59 · Indexed 15 October 2026
Channel: KPIX | CBS NEWS BAY AREA · 2018 · News & Politics
KPIX 5's Da Lin spoke with a doctor who explained how the bad air affects health. (11-16-18)
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