'ozone-scented' is a modern English compound formed from 'ozone' + 'scented'. 'ozone' originally comes from Greek 'ozein' meaning 'to smell', and 'scented' is derived from 'scent', from Latin 'sentire' via Old French.

'ozone' was coined in the 19th century (attributed to C. F. Schönbein, c. 1840) from Greek 'ozein' ('to smell'); 'scented' developed from Old French/Latin roots (Old French 'sentir', Latin 'sentire' 'to feel, to smell'), and the compound 'ozone-scented' arose in modern English by combining the noun 'ozone' with the past-participial adjective 'scented'.

Originally, the Greek root 'ozein' referred to smelling; 'ozone' came to name the triatomic form of oxygen discovered in the 19th century (named for its distinctive smell). The compound 'ozone-scented' now specifically describes something that smells like ozone.