How do the primary odors relate to your ability to smell different odors?

There are two possible answers to this: The source of the smell may simply be 'in your head'. If your nose and related organs have suffered some damage then it just simply goes ahead and produces all...

An odor can be good or bad.

Like alcohol

metabolic disorder

The smell you get from fermented dough is from the Yeast reacting with the fermentable sugars and causing carbon dioxide to be given off. The smell can vary, getting stronger the longer the dough is...