[potato3732842]

>Unless the other thing is asbestos or generally any kind of mineral/anorganic material - pneumoconiosis [1] is nasty in all its variants. There is no mechanism at all for your body to break down or expel anorganic contaminants in your lungs.

Yup. I was thinking of heading off comments like yours by mentioning silicosis or lead poisoning but didn't want to clutter up a simple clarification.

Anyway, still mostly safer than "happy to react with things" compounds which is why people like you get to make comments about it here and now vs it simply being a thing everyone has accepted is not good to breath for hundreds of years (like certain wood dusts)