Knife wound's opening that is located after unpleasant smell (5)
I believe the answer is:
bowie
'knife' is the definition.
(Bowie knife is an example)
'wound's opening that is located after unpleasant smell' is the wordplay.
'opening' indicates taking the first letters.
'that is located' becomes 'ie' (I can't justify this - if you can you should believe this answer much more).
'after' means one lot of letters go next to another.
'unpleasant smell' becomes 'BO' (informal abbreviation for body odour).
The first letter of 'wounds' is 'w'.
'w'+'ie'='wie'
'wie' after 'bo' is 'BOWIE'.
Can you help me to learn more?
(Other definitions for bowie that I've seen before include "American frontiersman, killed at the Alamo, 1836" , "David --, singer" , "David --, rock singer/songwriter" , "Dagger-knife" , "Art rocker David" .)