Baffled microbiologist not exceptionally stoic in a perplexing situation (9)

I believe the answer is:

imbroglio

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'situation' is the definition.
(I know that imbroglio is a type of situation)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for imbroglio that I've seen before include "Confused mess" , "Intricate and confusing heap or situation" , "Dilemma" , "massive jam" , "Confused and tangled situation" .)

I've seen this clue in The Telegraph.

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