One feels queen should be repelled by insect (7)
I believe the answer is:
antenna
'one feels' is the definition.
(I've seen this before)
'queen should be repelled by insect' is the wordplay.
'queen' becomes 'anne' (I've seen this before).
'should be repelled' shows that the letters should be reversed in order.
'by' says to put letters next to each other.
'insect' becomes 'ant' (ant is a kind of insect).
'anne' written backwards gives 'enna'.
'enna' after 'ant' is 'ANTENNA'.
(Other definitions for antenna that I've seen before include "What detects signals" , "one feels" , "sensitive feeler" , "Insect's sensory appendage" , "connected to 41?" .)