Bouquet old rogue oddly presented to king (5)
I believe the answer is:
odour
'bouquet' is the definition.
(I've seen this before)
'old rogue oddly presented to king' is the wordplay.
'oddly' indicates alternate letters (letters in the odd-numbered positions are used).
'presented to' says to put letters next to each other.
'king' becomes 'R' (abbreviation of Latin rex).
'old'+'rogue'='oldrogue'
The alternating letters of 'oldrogue' are 'odou'.
'odou'+'r'='ODOUR'
(Other definitions for odour that I've seen before include "Nasty smell" , "A smell, good or bad" , "Aroma or fragrance" , "Regard" , "Any property detected by the olfactory system" .)