I don't know if I've mentioned this before, but there's auto mechanic's garage next to my apartment. Sometimes the mechanic runs things or leves things set inside the garage that flood my aparment with caustic fumes. 

The fumes don't set off my carbon monoxide detector, but they can't be good for me.

I know that I know better, but sometimes,  mostly just after breathing the fumes, I get the impression that the guy is intentionally trying to poison me...