Whereas medical masks are typically tied loosely around the face (hence air can bypass the filter), respirators fit snugly ...
Smoke that’s been blown southward from hundreds of Canadian wildfires are causing hazardous air-quality conditions. With all the nasty air particles floating around, experts say you should wear a mask ...
On March 28, 2020, as COVID-19 cases began to shut down public life in much of the United States, then-Surgeon General Jerome Adams issued an advisory on Twitter: The general public should not wear ...
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