My last tenant was, to put it mildly, a slob. I spent several hours cleaning the fridge pictured below, with a steam cleaner and various cleaning products until it looked nearly new. I then removed the rear of the freezer that housed the fan and cleaned the drain channels there as well (which were in a bit better condition than I expected).
I then added a fresh box of baking soda to both the refrigerator and freezer sections, however after a few days of running the fridge it still smells.
My refrigerator looks clean, why does it still smell? and how can I fix it?