“…For evaluation of the odour preference level, participants scored each sample odour according to their impression on a 6‐point rating scale as follows: 0, nauseating; 1, unpleasant; 2, a little unpleasant; 3, neither pleasant nor unpleasant; 4, pleasant; 5, extremely pleasant. The parameters were modified from the semantic differential (SD) method used in our previous report . For evaluation of evoked image, subjects evaluated the smell of samples on a 4‐point rating scale, from no sensation (0) to extreme sensation (3) for two tastes (sweetness and sourness).…”