The smell of pig's trotters in the refrigerator may be caused by the following reasons:

1. If the trotters are not well sealed, bacteria and molds in the air will grow and multiply on the food, leading to food deterioration and odor. Therefore, before you put it in the refrigerator, you should make sure that the food is sealed to prevent odor.

2, pig's foot bag is a high-fat, high-calorie food, easy to breed bacteria and mold. If the pig's foot steamed stuffed bun is not eaten in time, bacteria and molds will grow and multiply on the food, leading to food deterioration and odor. Therefore, after buying trotters, you should eat them as soon as possible and don't put them in the refrigerator for a long time.

3. There is an odor in the refrigerator, which will also affect the taste of the pork knuckle bag. Therefore, it is very important to clean the refrigerator regularly. You can use detergents or natural detergents (such as orange peel and lemon) to clean the refrigerator to remove the odor.