Question

Wheat dough if left in the open after a few days starting to emit a foul smell become unfit for use.

Answer 1

Ya it's true as after some time, it's getting bad smell because of the releasing of carbon dioxide excess in the room.

Hope it helps u dear :)

Answer 2

Carbohydrates in wheat dough encourage growth of yeast and other saprophytic fungi elwhich break down carbohydrates, and emit a foul smell.