Odd series about Frenchmen goes down overseas like a lead balloon perhaps (8)

I believe the answer is:

immerses

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'goes down overseas like a lead balloon perhaps' is the definition.
I can't judge whether this defines the answer.

'odd series about frenchmen' is the wordplay.
'odd' is an anagram indicator.
'about' means one lot of letters goes inside another.
'frenchmen' becomes 'mm'.
'series' anagrammed gives 'ierses'.
'ierses' placed around 'mm' is 'IMMERSES'.

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I've seen this clue in the Irish Times.

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