Smell and taste are the most mysterious and misunderstood senses. What we know about them pales in comparison with what we don't. This episode explores how smell combines with taste, somewhere in our brain, to create the perception of flavour. In contrast, we meet a woman who lost her livelihood when she lost her sense of smell. Only now that it's gone does she realize that smell, in ways she never appreciated, is as important as the other senses in making people whole.

Chapters include: 1) Introduction 2) Myriad of flavour 3) Sensitivity to smell 4) Smell, memory and emotion 5) Olfactory performance.