Synecdochic mentions doing that in this thread and I was trying to think of places I could go to do that.

Aveda carries singular notes, but they're mostly stuff I already know how it smells.

The woman who does my facial has started selling DoTerra which has tons of singular notes, and I bet she'd let me smell any of the ones she has.

Outside of that, I wonder if acupuncturists or health food stores might have that kind of thing?