Why does rice go bad next day? I'm using a rice cooker to cook rice and I find the very next day it starts to increasing smell bad and I feel like puking just smelling it.

Not sure what the cause is but the rice cooker has started making funny noises when cooking(though rice cooks fine so probably not that) and I leave the rice in a poorly ventilated and warm environment.  Still dont think that should cause it to go bad so soon as Ive always made rice in the same place and it doesn't do so bad.

Thanks
Leftover rice is one of the most common causes of food poisoning. Once cooked it needs to be immediately cooled down if you aren't going to eat it straight away, and it needs to be kept cold until reheated. Reheating should be a quick process that doesn't allow it to sit for a long time at a lukewarm temperature.