The raw PM2.5 values also skyrocket with just boiling tap water, on my Ikea Vindstyrka. Which makes me question how useful it is, presumably even with "dry" cooking a lot of meats and vegetables have water in them?
It's actually not been established (at least, to the best of my knowledge) that PM2.5 caused by water vapor is any less harmful than other types of PM2.5 particulates.
And sure, yes, it's just water and its entirely plausible that water based PM2.5 is completely harmless... but wouldn't it be good to know that for sure?
https://www.ikea.com/gb/en/p/vindstyrka-air-quality-sensor-s...