'aromatizer' originates from Greek, specifically the word 'arōma' (ἀρόμα), where 'arōma' meant 'spice' or 'fragrant smell'. The element '-ize' (from Greek/French via Latin) forms a verb meaning 'to make or render', and the agentive suffix '-er' creates the noun meaning 'one that ...'.

'aromatizer' developed from the noun 'aroma' entering English via Latin and Old French; English formed the verb 'aromatize' (aroma + -ize) and then added the agent suffix '-er' to create 'aromatizer' (a device or agent that aromatizes).

Initially, 'aroma' referred to a fragrant spice or smell; over time the derived forms came to mean 'to give a scent' and 'a device or substance that imparts scent', which is the modern sense of 'aromatizer'.