Place to free smelly mammal (7)
I believe the answer is:
polecat
'smelly mammal' is the definition.
'place to free' is the wordplay.
'free' is an anagram indicator.
'place'+'to'='placeto'
'placeto' is an anagram of 'POLECAT'.
(Other definitions for polecat that I've seen before include "weaselly type" , "Smelly animal" , "Beast of weasel family" , "Kind of weasel, called skunk in America" , "Weasel-like creature" .)