Filthy rich nob means to have air travel for life (7)
I believe the answer is:
bronchi
'means to have air travel for life' is the definition.
(air passages in the lungs)
'filthy rich nob' is the wordplay.
'filthy' indicates an anagram (messy letters).
'rich'+'nob'='richnob'
'richnob' is an anagram of 'BRONCHI'.
(Other definitions for bronchi that I've seen before include "Air passages" , "Branches of the trachea" , "airlines" , "airy spaces" , "breathers" .)