Picking up oddly smelly Scotsman's good vibrations (7)

I believe the answer is:

warbles

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'good vibrations' is the definition.
Both the answer and definition are plural nouns.
Perhaps they are linked in a way I don't understand?

'picking up oddly smelly scotsman's' is the wordplay.
'picking up' says the letters should be written backwards.
'oddly' indicates alternate letters (letters in the odd-numbered positions are used).
'scotsman's' becomes 'braw' (I can't explain this - if you can you should believe this answer much more).
The alternate letters of 'smelly' are 'sel'.
'sel'+'braw'='selbraw'
'selbraw' backwards is 'WARBLES'.

Can you help me to learn more?

I've seen this clue in The Independent.

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