About Refrigerator Door Gasket
You are positive that you closed the refrigerator door, but the milk is warm and smells funny, which is not how you left it the night before. It could be that the problem is actually your refrigerator door gasket, and not that the door was left open at all. When the gasket starts to go bad, it does not seal as well as it did before and there are gaps between the edge of the opening and the door, itself. As a result, cold air leaks out and warm air can leak into it. You sure do not want to have to replace your entire fridge just because one piece is malfunctioning. When you replace your gasket, it is important to find the right one, because a Frigidaire gasket likely does not fit a Kenmore refrigerator. Once you know for sure that the gasket is your problem, it is no trouble at all to remove the old one and attach a new one. With the vast inventory on eBay, you can find exactly the right refrigerator door gasket for your fridge.