Recently I had a raw whole chicken go bad in my refrigerator before it's expiration date. It took me a few days to realize it was this chicken causing the foul odor in my refrigerator. After taking the chicken out, the odor remained. So I opened a box of baking soda, dropped some drops of Lemon essential oil into the baking soda and put it into the fridge. The smell was completely gone within one hour. And the refrigerator smelled lemony fresh!