A need to mask one's strong scent (7)

I believe the answer is:

aniseed

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

'strong scent' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.

'a need to mask one's' is the wordplay.
'to mask' is an insertion indicator.
'one's' becomes 'i's' (Roman numeral).
'need' placed around 'is' is 'niseed'.
'a'+'niseed'='ANISEED'

Can you help me to learn more?

(Other definitions for aniseed that I've seen before include "Liquorice-flavoured seeds" , "Plant" , "Flavouring of sambuca" , "Pernod flavouring" , "Licorice-flavoured sweets" .)

I've seen this clue in The Sun.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.