I never thought about this before, but of course smell would be different from taste.
One must understand that just as seeing and hearing are two different senses, and so are smelling and taste. You can have a great mint taste in your mouth (after using Altoids, for example), but the odor being sensed by the person next to you at work can be a disagreeable sulfur odor. This is true because the sugar in those products stimulate the bacteria to produce more sulfur compounds.
Pharmaceutical companies realized early on that it could be very easy to fool the public by creating strong flavors in oral rinses, which would then be sensed by the brain as if the user's breath was fresh.
Some oral rinses are flavored to taste like medicine with the distinct purpose of creating the sense to the user that product with that flavor is actually doing something.
^Makes me think about the uselessness of toothpaste. My teeth have been healthier and whiter since I stopped using toothpaste. Ironically, it was my 91 year old grandma who first showed me that toothpaste isn't necessary.

Metallic Taste in Mouth Causes and Bitter Taste in Mouth by Dr Katz