Hull deserves more of a mention
as it is remarkable for its malodourous industry. Depending on the direction of the wind, and providing local farmers aren't muck-spreading, you can experience the following smells:

* The cocoa mill smells gorgeous. Except in certain weather conditions when it smells terrible and I'm not sure how that might occur.
* "Mauri Yeast" smells a lot like, well I don't know. The only thing I've smelt the same was a soft-drink I bought in the late 80s that was technically chocolate-ade. It smelt like Mauri Yeast and tasted like it too. (Not to confused with Maori Yeast which is probably an antipodean genital infection).
* Cargills is a plant that processes oilseed, producing edible oils and fats. So you can imagine what that smells like.
* Then there's Holmes Hall Tanners. On a good day, it smells of chamois leathers, (those squidgy leather rags that you wash the car with if you're not familiar with them). On a bad day, it smells like someone's wedged a couple of stink bombs up your nose and then smacked you in the face with a handful of sulphur.
* Near the docks, there's a strong smell of what I think is a over-used tar boiler that someone has added a load of molasses to.
* There's a fish processing plant next to the fish docks. It does not smell of the fresh fish (which smells like the sea), it smells of bad fish.
* The gas-works always smells like there's a massive leak. I think it's where they add the Ethyl Mercaptan (which gives the gas its familiar odour). The gas coming out of your cooker is about 10 parts per million. This place will have drums of the stuff
* BP own a large site just outside the city that produces acetic acid. It smells like salt and vinegar crisps, if you climbed inside a warehouse full of them, which happen to be rejects because they'd added 100 times the amount of flavourings than normal, and you inhaled sharply.
* There's a place that makes breadcrumbs and croutons. It smells like a chip pan that hasn't seen fresh oil in years.

Fortunately, the bone-meal factory closed many years ago. If you're not familiar with the smell, go in a petshop, open the biggest tub of fishfood you can find (the multi-coloured flakes stuff, not the pellets) and get a good noseful of that. Now multiple it by lots.

Sadly, Rank Hovis shut their flour mills. That smelt of freshly baked bread all the time. I used to catch the bus outside there and there was a fan outlet, so warm air that smelt of bread when waiting for the bus in a freezing November morning was heavenly.
( sandettie light vessel automatic New Twitter - @bollocksreally, Mon 2 Nov 2009, 11:04, 4 replies)

If by fish food
you mean that tetra pak stuff, then that's lovely. The smell's amazing.
(Evilweevil is covered in bees, Mon 2 Nov 2009, 12:19, closed)

Not that stuff
the coloured flakes.
( sandettie light vessel automatic New Twitter - @bollocksreally, Mon 2 Nov 2009, 13:32, closed)

for some reason
every time i had a hangover when i lived in hull the wind seemed to be in the right direction to capture the tanning factory and the chocolate factory thing. the combination was quite quite wrong. bastard hull and its bastard stinkiness...
(Alphabet Soap boshboshboshbosh, Mon 2 Nov 2009, 13:21, closed)

The worst one now is the (fairly) new sewage processor
across the road from BP. That fucking honks, they're not doing it right.
(Land of Green Ginger It's dreamy weather, Tue 3 Nov 2009, 10:59, closed)