That's a good (and valid) question!
A lot of the scents I love were actually "love at first sniff." These are scents that I took a strong liking to just because I liked the way they came across or how they developed on my skin. I know that may not be the kind of answer you're looking for, but it's the only one I can give. Like a favorite song....the first time you heard it, there was something that drew you in.......melodic hook, guitar tone, drum beat, singer's voice........whatever! It came across to your ears and you were drawn in. Scents have the same effect!
I admit, there are a few frags that took me some "acquaintance time," to kinda "get" a scent and understand it. Eventually liking it and being comfortable in it. But believe me........there's NOTHING like "love at first sniff!!"
Good Luck and remember......trust your nose!!!
;D ;D ;D ;D ;D