I remember making a pot of vegetable soup late at night, and before I could finish, I was totally tired, covered the food so tight, and fell asleep. Waking up in the morning, oh boy, the heat of the day and the one in the food caused the soup to start smelling sour. Remember, improper food storage attracts bacteria to grow in the food. It was painful to discard, but I had to to avoid eating decayed food and running to the hospital later.
Let me not lie, there were times I was in your position, I added oil and onion and continue eating lol