You've said too much now, I'm very curious about what you encounter at work now.
I do a bit of sewerage stuff,
image
Thats exactly what you think it is,
and it smells like
SPONDOOLIES 
I asked work colleagues how much I'd need to pay for them to jump in, touch the bottom of the tank and go for a swim, one of them would do it for $100,000.
I thought that was a bit cheap to be honest.
Maybe this is why I don't mind touching personal effects found under that seat base, I'm waiting for the day when I gotta go in there to fix a pump.
One of the other crews went into one of the wells to pump it all out and clean it up, all sorts of things end up in there, he goes down on a rope and then blasts it all off, he wouldn't wear safety glasses because they just get caked in crap and he couldn't see, so all the splash back was going on his face.