An unhealthy refrigerator can increase our health risks. If the refrigerator frequently smells bad, it is important to find out the reason. To prevent the growth of germs in the refrigerator and to keep the refrigerator fresh, you need to clean the refrigerator regularly. Along with this, you want to know what causes the refrigerator to become unhealthy and cause bad odor.

1. If you accidentally spill food, it's important to clean it up immediately, otherwise a bad odor can develop and spread.
2. If you keep stale food in the refrigerator for a long time, it can emit a bad odor.
3. If not covered properly, the smell of one food spreads to other foods, and the refrigerator also becomes smelly. 
4. If not cleaned regularly, the refrigerator can become dirty and emit an unpleasant odor. 
5. If you keep foods with strong odors like onions or garlic in the refrigerator, the odor can spread to other foods. 
6. Many of us keep baking soda in the fridge to remove bad odors. However, we forget to change the baking soda container regularly. Change the baking soda container at least once a month. This will prevent bad odors from forming in the fridge.  
7. If the freezer's defrost system is not working properly, there may be a bad smell in the refrigerator.