Smells, moods and memories

Scents and smells are such an integrated part of our daily lives we tend to ignore it – until it warns us! Scents warn us if food is safe to eat, if there is a fire close by or even if a specific person is close by. We have distinct favourite smells and fragrances and some less-favourite. But what is a scent and why is it connected to memories?

What does a smell look like?

Smells are chemical molecules that travel through air or water and they are light enough to be