Healer who's right on the nose? (14)

I believe the answer is:

aromatherapist

I'm a little stuck... Click here to teach me more about this clue!

'nose?' is the definition.
Both the definition and answer are singular nouns.
Maybe they are linked in a way I don't understand?

'healer who's right on' is the wordplay.
'healer' becomes 'therapist' (synonyms).
'who's right' becomes 'aroma' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'on' says to put letters next to each other.
'therapist' put after 'aroma' is 'AROMATHERAPIST'.

'the' is the link.

Can you help me to learn more?

I've seen this clue in The Daily Express.

Want a hint initially instead of a full solution? Install my app