I was casually chatting with my uncle who is a doctor, he says something along the lines that if a chemical can kill a rat or a mosquito, to assume it won't do any damage to humans is kind of hilarious.

Of course humans who inhale this thing in small quantities won't die, but you can be sure they will kill some tissues that they go into. Now comes another problem of regular exposure, and these chemicals having an entry, but no exit path. That just means there are tissues, that are likely dying out every time there is a exposure.

Again none of this might kill you at the first exposure, but if there are enough dead tissues, there sure is likely to be things like Parkinson's or may be even diabetes.

Im guessing combined with this, if you already some bad genetics it could cause issues like these.