Coffee wafting nice aroma (9)
I believe the answer is:
americano
'coffee' is the definition.
(I've seen this before)
'wafting nice aroma' is the wordplay.
'wafting' indicates an anagram.
'nice'+'aroma'='nicearoma'
'nicearoma' anagrammed gives 'AMERICANO'.
(Other definitions for americano that I've seen before include "Espresso diluted with hot water" , "Style of coffee" , "drink" .)