I'd hazard a guess whatever problems you have is likely an accumulation of life long junk.
I was an engineer for Uncle Sam with nearly 4 yrs of diesel oil, fumes and exhaust, a smoker for 19 yrs, heavy for the last 5, (quit in 88). I started in the construction trade in 1978 as a roofer at the time mostly hot tar and began house framing in 1981. I also began to acquire pollen allergies in the mid to late 90s.
Add in a few fist to face fights in HS and the service and too many to count drunken face plants, (mostly falling out of bunk and bed). Last but not least I've become scent sensitive, some smells worst of all cigarette smoke and perfumes are so over powering to the point that my throat closes up making breathing and swallowing very difficult.
Never bite the hand that looks dirty!
The more you know the more you're worth