Why does vinegar stink?

Answer 1

Because that is just a natural property of acetic acid, which is the chemical name for what is in vinegar. White vinegar is just acetic acid and enough water to give a 5% concentration. Dark vinegar is natural vinegar which has been filtered, but not distilled. While they smell different, they both have the acetic acid smell in common.

Answer 2

Something may be wrong with your sense of smell. If it's not that then there might be another foos that was made with vinegar, so you smell vinegar because of that food.