olfaction
ol.fac.tion \a:l-'fak-sh*n, o-l-', 'a:l-., 'o-l-.\ n : the sense of smell : the act or process of smelling
Webster's English Dictionary Webster's English Dictionaryol.fac.tion \a:l-'fak-sh*n, o-l-', 'a:l-., 'o-l-.\ n : the sense of smell : the act or process of smelling