It is amazing just how bad a bag of not-quite-fresh steamed rice can smell, I would say rice has a potantial stink factor of 10.
Asia, well I guess hot countries in general - are full of nasty niffs - the smell of the meat section at a market on a hot day can bring on a gag, pork when forgotton at the back of a fridge is sickening, eggs are renowned and a half empty carton of milk discovered in an abandoned building after a month or so has got to be one of the worst.
Try a diet of squid, eggs and cider for the ultimate poo smell or the vagaina of a western backpacker upon arrival in Siam Reap for another memorable bio-stink.
That's my contribution for today... I think somebody should also do a thread on 'Best Smells' in which I would have to include Tequilla, Lavender, new shoes and petrol among others.