osphresiology
/ɒsˌfriːsɪˈɒlədʒi/rare. Now historical
noun
Originally; †a treatise on the sense of smell and odours (obsolete ). Later: the scientific study of the sense of smell.
Origin
Mid 19th century; earliest use found in Robley Dunglison (1798–1869), physician and medical writer. From French osphrésiologie from ancient Greek ὄσϕρησις smelling, smell + French -ologie.