3rd for paper factories. Covington, Va. smells like high hell depending on wind.
Strangely, it's a little like skunk smell... meaning, from a distance, at a very light whiff, it's not the worst thing, and can remind you of younger days, but up close, it's hell on the nose.
During hot summer days near a paper mill, the acrid air will burn your eyes. Air so acidic it would peel paint off the houses, had they not been coated in some 1940's lead based paint.
A friend of mine who sold tractors in the area asked a client "how do you tolerate the smell?"
The local responded "Boy, that's the smell of money!"