Sodium bicarbonate a.k.a. bicarbonate of soda is the Jedi of the chemical world. You can use this mild alkali non-toxic substance for dozens of jobs around your home....Including cleaning, polishing, stain removal and a whole host of other jobs.
Other than using bicarbonate of soda in cooking, another great use for it is for deodourising fridges. Simply open a box and put it in the back of your fridge and it will absorb odours. Just remember to change it periodically.
Here's a few other uses: