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this post was submitted on 28 Nov 2023
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Science
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They filter particulates, CO2 is a gas. Some also have UV-C lights for killing microbes, and some have ozone generators which, despite making things smell clean, should not be run near people.
If you want to "filter" CO2 out you need what's called and carbon-dioxide scrubber, like what's used in rebreathers for divers, submarines, and the space station.
Also the UV ones are basically a scam, they shine a UV light on the air for so little time it achieves nothing.
Pretty much figured that. I have seen one which shines it at the filter which 🤷♀️ maybe does something but yeah, probably the better way if someone really wanted to do that is to evacuate the room and just have the light in there for a bit but even having one of those bulbs around without interlocks is kinda dangerous. All the danger of staring at someone welding without the super bright light to make you look away.