Smoke deposit turned up after Fifth of November -- could be related to muscle pain (7)

I believe the answer is:

myalgic

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'muscle pain' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for myalgic that I've seen before include "Involving muscle pain" , "Relating to muscle pain" .)

I've seen this clue in The Telegraph.

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