If the wind blew a certain way we'd get a whiff of the papermill in Savannah. Smelled like sulfur, which is what my mother's well water when she lived on the river in Jacksonville smelled like - not nice but you get used to it.
When in Jax, my school was across the river from the Maxwell House plant. Making coffee puts out a smell like burnt toast.
A dead squirrel in your duct system will also curl your hair - and takes FOREVER to find and get out.
And I swear I worked for a guy who had the WORST smelling poops....and my office was right across from the restrooms

I had an industrial strength can of air freshener I'd start spraying as soon as he walked in there.