Smell repelled old European, one with wind (4)
I believe the answer is:
oboe
'wind' is the definition.
(oboe is a kind of wind)
'smell repelled old european' is the wordplay.
'smell' becomes 'B.O.' (abbreviation for Body Odour).
'repelled' says the letters should be written in reverse.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'european' becomes 'E' (abbreviation e.g. EU).
'bo' reversed gives 'ob'.
'ob'+'o'+'e'='OBOE'
'one with' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for oboe that I've seen before include "Slender double-reed instrument" , "issuer of notes" , "Double-reeded woodwind instrument" , "bit of wind" , "Orchestral instrument" .)