When some wheat dough was left in the open for a few days it started emitting a foul smell .why

When some wheat dough was left in the open for a few days it started e

1.	When some wheat dough was left in the open for a few days it started emitting a foul smell .why
Answer» Wheat dough when kept in open for few days, following activities takes place: 1. FORMATION of FUNGUS 2. reproduction of yeast These fungus and yeast when present in dough, it will BECOME unfit for eating or for use. Since formation of fungus takes place in dough, so it gives a foul smell. I hope this helps... PLEASE MARK it the brainliest answer