Do N95 Masks limit us breathing of Oxygen Cover

Do N95 Masks Deprive Us of Oxygen?

Wearing masks for hours on end has led some people to worry about whether N95 masks deprive us of oxygen. Scientists have actually made people wear N95 masks and measured their blood oxygen. So we have a solid answer to this question, and it’s not what this question assumes. This … Read more

Closing Windows Oxygen Levels

Does Closing the Windows Starve Us of Oxygen?

Air purifiers work best in a closed room environment, but this makes some people worry that closing windows starves us of oxygen. Yet recent tests in a real apartment — with as many as seven people in a small room — show less than 1% change in oxygen levels in … Read more

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