https://en.wikipedia.org/wiki/Chronic_solvent-induced_encephalopathy
True. I can't count the number of painters I've met that had issues.
Asked one guy if he wears a mask when he sprays. "Yeah bro." Oh so you have a filter that takes out particles as well as chemical vapors? "Um... idk!" So he shows me and it's a particle filter only. Uh uh, see that only takes out dust so maybe something for chemicals would be a good idea & they just click together one on top of the other so it's real easy!
Worked for his dad, who was a nice enough guy but a total moron. Made sure his kid turned out just like him.
I know another guy who puts on epoxy waterproofing once every couple months. Same every time - complaining about how overpowering the smell is, how he's so lightheaded, etc. And I ask him every time: Do you have a mask that you can wear that'll filter that shit out? And every single time he says

a what? Oh! Um. No. Well then fuck you. And keep that smelly shit away from me.