'normosmic' originates from a modern medical/Neo-Latin formation, specifically combining the prefix 'normo-' (from Latin 'norma' meaning 'rule, standard') and Greek 'osme' meaning 'smell'.

'normosmic' was formed in modern medical/technical English by combining the elements 'normo-' + '-osmic' (parallel to terms like 'anosmic' from 'anosmia'), entering English usage via Neo-Latin/medical terminology rather than through an older Middle English stage.

Initially coined to mean 'having a normal sense of smell' in clinical contexts, and this core meaning has remained stable in medical usage.