Acetone is a by-product of the breakdown of chlorofluorocarbons (CFCs).  When these chemicals leak from air conditioners, refrigerators, and other appliances, they spread a strange acetone smell within their surroundings.  If your refrigerator is leaking, it could be a sign that the seals around the door gaskets need to be replaced. The gaskets create an airtight seal that helps to keep cold air in and prevent warm air from entering. Over time, the gaskets can become worn or cracked, allowing cold air to escape and warm air to enter.  As a result, your refrigerator will have to work harder to maintain the proper temperature, which can lead to excessive ice buildup and water leaks.  Fortunately, replacing the door gaskets is a relatively easy repair that you can do yourself. Simply remove the old gaskets and install new ones in their place.  Be sure to clean the surface of the door where the gaskets will be installed to ensure a tight seal. With new gaskets in place, your refrigerator should be able to maintain the proper temperature without leaks.