Any fridge one day has unpleasant smell, which can be caused not only by spoiled food.
The reason for the smell is some features of the unit itself, as well as food stored in the open state, such as fish or pickles.
The smell in the fridge can start smell if the drain hole is clogged.
Moisture will collect in the drain tube, which, together with debris, will become a source of an unpleasant odor.
The storage tank may also become clogged, or the cause of the stench will be dirt that has accumulated over time under the door seals.
You can cope with these troubles through regular maintenance of household appliances.
However, if the smell has appeared, then you can eliminate it with the help of one simple remedy.
Activated charcoal will help, which itself does not smell, and does not allow others to spread aromas.
After two days, the coal will absorb all the odors that live inside the fridge.