Evolutionary, gustation and olfaction developed together. In&colon; R.L. Doty (Ed)&colon; Handbook of Olfaction and Gustation. They carry the special senses of smell (olfaction) and taste (gustation). Aug. 31, 2007 - Fish attractant qualities of the gustation compound are confirmed. Both olfaction (smell) and gustation (taste) require the transduction of chemical stimuli into electrical potentials. Conditioned taste aversion is often used in laboratories to study gustation and learning in rats. Gustation&colon; Animals also use their tongues to enhance their sense of smell.