The old rendering plant we had here locally shut down some years back. Have a friend that worked there for a few years as a truck driver/mechanic. He told me he has had vehicles stopped next to his truck at traffic lights actually run the red light to get away from the smell. Said, too, sometimes in the summer when he stopped for a bite of lunch it was common for the restaurant employees to come flying out yelling at him to get his stinking truck out of their parking lot, you're running all of our customers off.
A joke he use to tell about how you could tell if someone worked around a rendering plant was if they moved their sandwich around in circle's and figure eight pattern,...he claimed that's how they kept the flies off between bites. Said the smell really didn't bother him all that much. I sorta figured as a former 101st AB Army cook, he'd had probably smelled worse.
