Well, I don't know if it's the best nose I've ever experienced, but I discovered a very pleasant one just last night purely by accident.
As noted in another thread, I attended a scotch vs. bourbon mock debate, and among the presented bourbons was Booker's.
At one point during the tasting, I cut the Booker's with some water (by guesswork, to an estimated 100 proof), but then got sidetracked tasting several other whiskies and just watching the festivities.
Well, Booker's had never stayed in my glass that long before, and when I went back to it -- maybe after 20-30 minutes -- I was immediately put in mind of candied taffy apples. You know, like from the fair. What's more, the palate registered the flavors to match.