Crossword Genius

Some smell I lack, required to appreciate this? (5)

Ross

I believe the answer is:

lilac

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

'to appreciate this?' is the definition.
The definition suggests a singular noun which matches the answer.

'some smell i lack' is the wordplay.
'some' indicates the answer is hidden within the clue (some parts of the word are used).
'LILAC' can be found hidden inside 'smell i lack'.

'required' is the link.

Can you help me to learn more?

(Other definitions for lilac that I've seen before include "Light-purple" , "Spiritual knowledge" , "Shrub with fragment purple or white flowers" , "Shrub or small tree with fragrant blossom" , "Fragrant, pale purple flower" .)

I've seen this clue in The Guardian.
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