1. It may be that the food in the refrigerator has been stored for a long time, resulting in an odor. The refrigerator is cleaned regularly after power failure. 2. It may be that there are many kinds of food in the refrigerator and the sealing performance is not good enough, which leads to the phenomenon of odor. It may be that the refrigerator has not been cleaned for a long time. Suggested measures: 1. The refrigerator at home should be cleaned and maintained regularly, so that the refrigerator will not smell, and even in the frozen layer, it is not allowed to put things for a long time. So the first thing to do is to turn off the power of the refrigerator and then defrost it. Take out all the food after the power failure, and then clean the ice in the refrigerator after melting. You can add boiling water to accelerate the thawing, wipe all the inside and outside of the refrigerator, then dry the water with a dry rag and ventilate for about 2-3 days before using it. 3. Refrigerator items should be reasonably discharged, and items with strong taste need to be pretreated in advance to prevent odor. 4. Carbon itself has the ability to absorb odor. When putting charcoal in the refrigerator, be careful not to put it on food. You can put it in a container and let it contact the air in the refrigerator. 5, usually pay attention to drink soup carefully, if it is knocked over, it is easy to produce a lot of odor, even if you are not careful, you should wipe it with a clean cloth in time.