Crossword Genius

Knock up a stink over fuel (8)

Ross

I believe the answer is:

paraffin

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'fuel' is the definition.
(paraffin is a kind of fuel)

'knock up a stink over' is the wordplay.
'knock up' becomes 'para' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'a stink' becomes 'niff' (niff is a kind of stink).
'over' is a reversal indicator.
'niff' back-to-front is 'ffin'.
'para'+'ffin'='PARAFFIN'

Can you help me to learn more?

(Other definitions for paraffin that I've seen before include "Liquid fuel" , "Kerosine" , "Petroleum product" , "Kerosene" , "Possibly oil" .)

I've seen this clue in The Telegraph.
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