The Science of Smell

Of the five traditionally accepted senses smell is definitely the overlooked underappreciated hipsters choice. 
I mean who would pick their sense of smell to keep over any of the other four?
Yet it can be so evocative and so surprising in it’s impact on us. If you’ve ever had a smell bring you back to a specific time or feeling you’ll know exactly what I’m talking about.
So how does smell work exactly?
Luca Turin is a Biophysicist, Group Leader in Quantum Neurobiology at the Fleming Institute in Athens and author of The Secret of Scent: Adventures in Perfume and The Science of Smell