What does the cryptic crossword clue "Some smell I lack, required to appreciate this? (5)" mean?

The definition is "r". The wordplay uses a hidden word. hidden in ("Some" of) smel- L I LAC -k The answer is LILAC.

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

Guardian Cryptic #29100 | 22 Down | 2023-06-19 flower