"Extraction of Coffee Flavours | Dr Monika Fekete" on YouTube
https://youtu.be/vAdDx4CZViU

Olfaction

Vomeronasal organ

The vomeronasal organ (VNO), or Jacobson's organ, is the paired auxiliary olfactory (smell) sense organ located in the soft tissue of the nasal septum, in the nasal cavity just above the roof of the mouth (the hard palate).

in humans it is present, but is vestigial and non-functional