Steam oranges on reflection, to emit a pleasant smell (5)

I believe the answer is:

aroma

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

'a pleasant smell' is the definition.
(I've seen this before)

'steam oranges on reflection to emit' is the wordplay.
'AROMA' is hidden backwards in amongst the letters.
However, I am unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for aroma that I've seen before include "Agreeable odour" , "particular charm" , "Perfume" , "Subtle quality" , "Distinctive scent" .)

I've seen this clue in The Irish Times.

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