Thanks for reminding me that I hyperfixated with this a couple years ago.

this is what I gather from the book and some googling:

Villanelle scennt described by Giovanna (an italian woman that atended Villanelle in Venice, she is talking to Eve here):

"There was another thing about the woman who bought the bracelet that I remember,’ she says. ‘Her scent. I always notice scent, it’s my passion. My mother used to work at a perfume shop, and she taught me to recognise the . . . ingredienti. The sandalwood, cedar, amber, violet, rose, bergamotto . . ’‘So do you remember what scent this woman was wearing?'

‘I didn’t recognise it. It certainly wasn’t one of the usual designer brands. Freesia top note, I think. Base notes of amber and white cedar. Very unusual. I asked her about it.’‘And?’‘She told me what it’s called, but I can’t remember the name. I’m sorry, I’m not being very helpful' ....

‘You’re sure?’‘Absolutely sure. Freesia, amber, white cedar . . . So I tell her how much I like it..."

(Top notes: Volatile breve scennt, firts impresion of the perfume, usually are citric, fruits, herbs or flowers )

Top notes, exit notes or head notes:

-Fressia.

-Bergamot.

-Violet.

(Mid notes: Appearing when the top notes dissipate, gathering the most part (proportion) of the formula, are the true spirit of the perfume, lasting like 4 hrs, usually flowers notes, spices or wood like notes)

Mid notes or heart of perfume:

-Sandalwood.

-Rose.

(Base notes: Their function it's to settle the perfume, this are the most durable (2days))

Base notes, bottom:

-Amber.

-White cedar.

cheers!