Baking soda is your best friend for giving your smelly fridge a nice bath! Put a small cup of it in the fridge. When its no longer working, after a few weeks, use it for scouring jobs, such as cleaning the sink. You can also scatter baking soda in the bottom of your rubbish and compost bins to neutralise nasty smells. Clean your fridge regularly with a solution of baking soda and warm water.
from: Ms Harris’s Book of Green Household Management.