It's odd for a Manx cat to make much noise (6)
I believe the answer is:
rumpus
'much noise' is the definition.
'rumpus' can be an answer for 'noise' (thesaurus). I am not certain of the 'much' bit.
'it's odd for a manx cat' is the wordplay.
'it's odd' becomes 'rum' (rum can mean strange or dubious).
'for' means one lot of letters go next to another.
'a manx' means to remove the last letter (Manx cats have no tail).
'cat' becomes 'puss' (puss is a kind of cat).
'puss' with its final letter taken away is 'pus'.
'rum'+'pus'='RUMPUS'
'to make' is the link.
Can you help me to learn more?
(Other definitions for rumpus that I've seen before include "Noisy disturbance" , "Kerfuffle" , "To-do" , "Making a fuss" , "Tumult" .)