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 question itself doesn’t ask IF wearing masks decreases oxygen, but HOW MUCH. It assumes there’s an effect. Elsewhere on Quora, someone asked if wearing a […]
Tag: CO2
Test: Can You Turn Off Your Purifier When You Sleep?
Here’s a question I often get asked: “I don’t want to hear the fan while I sleep, so can I run my air purifier for an hour and then turn it off before sleeping?” The logic is that, since the doors and windows are closed, once we clean all the air in the room, it […]
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 a closed room. Fears […]
With a Window Open, Air Purifiers Still Effective?
Will my purifier still be effective if I have a window open? New test data from Smart Air finds that purifiers can still meaningfully reduce particulate pollution in a room with a window cracked. Obvious Town: Purifiers Most Effective With Windows Closed No one doubts that purifiers are most effective with the windows closed. That’s […]
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