I envy the way Luca Turin can translate into words what he smells. Sometimes when I smell something I can tell exactly what it smells like but sometimes I need days until I found out what it does remind me of. I think it's possible to train yourself in it, I like to smell my materials "blind" and try to find out what kind of material I'm smelling. I pick up a bottle without looking at the label or do it with someone else and ask to give me a bottle without telling me the name. It's funny to smell the material with an open mind and without being prejudged, sometimes I smell nuances of the material I never smelled before. Radio New Zealand did an interview with Luca Turin about smell, the interview is 30 minutes long and very interesting, you can listen to it here:
Have a nice Sunday!