That's why you should have a roll of toilet paper in the fridge. Moisture in the refrigerator often not only causes an unpleasant smell in the interior, but also contributes to the formation of mold.
Coffee beans and powder, baking powder and lemons can also be helpful for odor problems. After two weeks, the roller should be removed and, if necessary, replaced with a new one. A coin in the freezer compartment of the refrigerator also works wonders and even protects against food poisoning.