SPECIAL TIPS FOR CLEANING REFRIGERATOR ODORS
If your refrigerator has gotten some odors, which has caused you to go on your cleaning refrigerator jag, you should definitely use some disinfectant and the baking soda mentioned above.
Many times a good cleaning, all by itself, will remove odors, since it is often the food particles and other dirt in the fridge, or old moldy food that is causing the problem to begin with.
However, if you’ve got a general musty odor in your fridge try adding some baking soda or coffee grounds in an open bowl to the refrigerator, such as on a back shelf. Leave it there for a couple of days, and often this will help absorb such odors.
Further, really look carefully at the corners of your refrigerator, and the seal where the door closes, since these are hard to reach areas which can easily develop mold and mildew, which causes odor. You may need to take care to clean these particular areas thoroughly if they look like they could be the cause of your problem.