Masseur, one that'll obliterate your boobs (6)
I believe the answer is:
rubber
This clue is a double definition.
'masseur' is the first definition.
(I've seen this before)
'one that'll obliterate your boobs' is the second definition.
(a rubber might erase an error or 'boob')
(Other definitions for rubber that I've seen before include "material for band" , "Latex from trees" , "Elastic material" , "a bit of bridge" , "Boring, obsessive type" .)