i The difficulties of talking about smells ii The role of smell in personal relationships iii Future studies into smell iv The relationship between the brain and the nose v The interpretation of smells as a factor in defining groups vi Why our sense of smell is not appreciated vii Smell is our superior sense viii The relationship between smell and feelings Smell, however, is a highly elusive phenomenon. Odours, unlike colours, for instance, cannot be named in many languages because the specific vocabulary simply doesn’t exist.