Do Face Masks Violate Workplace Oxygen Levels Set by OSHA?

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Peggy Hall from created a video recently that has gotten a lot of buzz. In it she points out that face masks that many government agencies have recommended wearing, may violate workplace oxygen levels set by the Occupational Safety & Health Administration. OSHA is a federal agency within the Department of Labor that oversees safety regulations in U.S.-based workplaces.

Hall points out that OSHA cautions against wearing face masks in the workplace as they do not prevent the spread of infectious diseases. She also shares a video sent to her by a viewer that shows that wearing a face mask causes the oxygen levels to which our bodies are exposed to drop below OSHA recommended levels.

A couple of days later there was also a post on Facebook got a lot of attention that explains that face masks actually do very little in terms of protection from Covid19 – both for the wearer and for those around them.

Cloth masks offer no filtering whatsoever and may actually makes you sicker, writes the Facebook user, Theresa Lynn. Surgical masks are designed for use in sterile environments and so in normal conditions get clogged up very quickly and are rendered useless.  And N95 masks are designed to be used in contaminated environments. Meaning if someone is sick and breathes through one, it does not protect you from exposure to any germs they may have because only the air the wearer breathes in is being filtered, not the air being filtered out.

Facebook, perhaps expectedly, censored the post, labeling it with a “partly false information” tag.

The clip and post have created a lot of buzz and got pushback from some in the mainstream media.

Below is a clip from Local 5 News in Iowa that rebuts the claims being made in these posts. You be the judge.

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