Explore how smell combines with taste, somewhere in our brain, to create the perception of flavour. Most people wrongly assume that taste dominates. But what actually allows us to differentiate one food from another beyond the basics of sweet, sour, salty, savoury and bitter, is the aroma. In experiments, a Toronto chef discovers innate characteristics that may explain his skill in the kitchen, and a woman who has lost her sense of smell points to the importance of these mysterious and misunderstood senses.