Elisa mentions labdanum in this week's Nosy Interview. I think this is a scent, maybe even a word, that those with less knowledge of perfume may be unfamiliar with. The best thing I've learned about labdanum comes from an informative Perfume Shrine post:
Herodotus and Pliny report that labdanum was collected by combing the beards of goats, which were impregnated with the substance. The goats graze from the branches [of the cistus shrubs] and the sticky resin gets stuck on their beards. Upon their return, their owners comb...their beards and extract the resin.
kneepad-needing goat via
Wikipedia says this same sticky goat hair was used to make the false beards once worn by Egyptian pharaohs. We can imagine then, that their beards may have had a "sweet, herbaceous, balsamic odor, with a rich amber undertone found in few other essences," according to Mandy Aftel's notes on labdanum, or, back to Perfume Shrine, may have smelled "balsamlike, with woody, earthy, smoky, and even marshy undertones. Some even describe [labdanum] as ambergris-like, or leathery and honeylike with hints of plum or oakmoss after a rain."
I think it would be good to have two goats and a yard. Resin is a really great word.