With every breath, fragrance particles enter our nose and travel to the mucous membrane situated there. The fragrance impulses are forwarded to the so-called limbic system, the oldest part of our brain. There, where neuro-transmitters and messenger substances control our vegetative nervous system and our emotional sensitivity, we perceive scents.

The nose is the only sensory organ which transmits its impulses directly to the brain without passing other parts of the nervous system.