It's even more important if this finding [1] (press release [2]) turns out to be true, namely that the amount of carbon dioxide in the air is not just a proxy for air quality, but that having less of it actually actively destabilizes virus particles.

Also, portable air cleaners seem to work pretty well [3].

[1] https://www.nature.com/articles/s41467-024-47777-5

[2] https://www.bristol.ac.uk/cabot/news/2024/virus.html

[3] https://www.sciencedirect.com/science/article/pii/S295036202...