Truth be told, my taste descriptions never match those of others, especially people that are adapt wine connoiseurs and constantly talk of "floral bouquets" and such.
If people have a chance, i think that almost everybody should take wine courses. To me, attending to some lessons has really opened my mind regarding wine (on the other hand I have also learned that my nose is probably detached from my brain - i can't explain in any other way the amount of scents I was missing).
However, the nose has to be trained much more than any other sense because most of the time we pay little attention to scents, and we are happy just with "good" or "bad" without further analysis. And we ever more rarely compare the scents with some other people: aside wine and fruit maniacs, usually there's little need to describe scents.
Once trained however a good nose can be really a beautiful thing. But unlike the eyes or the touch, the nose has to be trained... and there are noses that are better than others, and you can't do anything about it.