Room in Lufthansa unaffected? (5)
I believe the answer is:
sauna
'room' is the definition.
(sauna is a kind of room)
'in lufthansa unaffected?' is the wordplay.
'in' indicates the answer is hidden within the clue.
'SAUNA' is hidden in the letters of 'lufthansa unaffected'.
(Other definitions for sauna that I've seen before include "Room for steam bath" , "Scandinavian hot room for cleansing oneself" , "Type of bath" , "Steam-bath" , "Where one is sweaty" .)