Comment by lxgr

Reminds me about this recent Reddit thread where somebody ran an Ozone generator in a house for hours to get rid of smells, and in exchange ended up with a much worse situation: https://www.reddit.com/r/chemistry/comments/q949go/holy_shit...

VOCs getting absorbed by surfaces was the most plausible theory in the comments there as well. Interesting to see more evidence for it.