[AtlasLion]

They already exist, i saw a video on hvac systems used in a moroccan pop-up hospital, air coming in or leaving the building goes through filtration and then through a désinfection machine. They didn't explain the method used though.

[adrianN]

I'd guess a strong UV-C light would kill the virus pretty reliably.

[nl]

Normal HEPA filters can stop the virus: https://thewirecutter.com/blog/can-hepa-air-purifiers-captur...