Refrigerator odor is a smelly problem

How do I keep my Refrigerator Clean and Odor Free ?  Every time I open the fridge door I found that I had the worst refrigerator odors.  It came from a combination of pot roast, cheese, cooked onions and old Chinese food. It was a pretty bad combinations of odors. 

I tried just about everything including baking soda, which didn’t really work as well as I had hoped.  I read a recommendation about an odor absorber for the refrigerator called Fridge-It. It was a easy to use purple cube which has a natually activated charcoal odor absorber in it.  After putting it into my fridge, the odors where absorbed.  I now recommend Fridge It odor absorbers to my friends.