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> air purifiers that kill viruses,

I'm hoping that this is unique to my country but a lot of such "kills virus" products I've seen are a)diluted bleach, or b)ozone generator, or c)UV lamps, none of which is safe near a person and none of which is effective at its job. It was my impression that there's no need to consult 4chan to assess the cost and benefit associated with inhaling bleach.

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Air purifiers with HEPA filters can effectively trap the virus in the filter [1]. Air purifiers with HEPA filters aren't terribly expensive and DIY options are possible (e.g., [2]) although I have also read that this setup is not as efficient at filtering as a purpose-built air filter [3] but also probably much better than nothing.

[1] https://www.nytimes.com/wirecutter/blog/can-hepa-air-purifie... [2] https://www.youtube.com/watch/kH5APw_SLUU [3] https://www.wired.com/story/could-a-janky-jury-rigged-air-pu...

Oh that’s what I meant thanks. Trap, not kill, my mistake.

Thanks for the link, I guess there’s slight difference between “trap/capture” and “kill”.

I don't see the downside of UV sanitizers if they're out of sight deep in the ductwork.

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