I cooked a big pot of vegetable soup and left it out for a while to cool off before putting it in the refrigerator. I forgot about it and left it there overnight. In the morning I put it in the refrigerator. It's later that same day and I just put some in a bowl and microwaved it and it tastes sour and has a funny smell to it. Anyone know what's wrong it it? Has it gone bad? Because that taste and smell is not good. I hate to waste so much food, but there's no way I can eat this. What happened to it?