The look and smell of a summerhouse? (6)
I believe the answer is:
gazebo
'a summerhouse?' is the definition.
('gazebo' can be a synonym of 'summerhouse')
'the look and smell' is the wordplay.
'the look' becomes 'gaze' (gaze is a kind of look).
'and' is a charade indicator (letters next to each other).
'smell' becomes 'B.O.' (informal abbreviation for body odour).
'gaze'+'bo'='GAZEBO'
'of' is the link.
(Other definitions for gazebo that I've seen before include "Type of summerhouse" , "Small summerhouse for shade" , "Kind of garden summerhouse with wide view" , "Metrical feet" , "Roofed structure in the garden" .)