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...