Hoosierwindowtek here... :lgwave:
I'm new, but just wanted to share my .02
I used to do vehicle undercoating years ago and people would always complain about the odor. I myself couldn't smell the stuff anymore after some time, so I wondered why they made such a big deal about it. Nowadays, if I'm around a vehicle that's been recently undercoated,(I currently still do a lot of automotive window tinting) It smells really bad to me, too. I think what I had experienced was acclimation due to frequent exposure, and I regret not wearing a respirator.
Recently, I started doing pickup truck spray bedliners, and in researching that product learned that without proper protection, a person develops what's called sensitization which means your body gets MORE sensitive to the effects, not less. Overexposure to those chemicals can lead to permanent asthma, and even one case of asthma related death.
In short, it's always best to limit exposure to chemicals. Chlorine is used to purify water for drinking, and in limited amounts is helpfull and useful. However, it's obviously corrosive, and I don't think anyone wants to corrode the sensitive tissues in the eyes, throat, and lungs! :lgsick: