Two ducks leaving malodorous bananas in Wiltshire site (3,5)

I believe the answer is:

old sarum

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'wiltshire site' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'two ducks leaving malodorous bananas' is the wordplay.
'two ducks' becomes 'oo'.
'leaving' is a deletion indicator.
'bananas' indicates anagramming the letters (informal term for mad).
'malodorous' with 'oo' taken out is 'maldrous'.
'maldrous' is an anagram of 'OLD SARUM'.

'in' acts as a link.

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(Other definitions for old sarum that I've seen before include "heritage site" , "rotten borough" , "ruined site" .)

I've seen this clue in The Independent.

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