Paraffin oil’s odd treatment for sore knee (8)

I believe the answer is:

kerosene

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'paraffin oil's' is the definition.
(I've seen this before)

'treatment for sore knee' is the wordplay.
'treatment for' is an anagram indicator (I've seen this in other clues).
'sore'+'knee'='soreknee'
'soreknee' anagrammed gives 'KEROSENE'.

'odd' is the link.
This may not be right. It may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for kerosene that I've seen before include "Combustible" , "Paraffin oil (E, not I)" , "No seeker for American fuel oil" , "Sore knee (anag.)" , "Oil used as fuel in lamps and heaters" .)

I've seen this clue in The Times.

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