Sekirov Dictionary

stink like a mackerel

verb2

To reek; to smell terrible.
•
(figurative) To smell fishy, to stink to high heaven (to look extremely suspicious or unconvincing).
- In summary, I think that the waterfront situation "stinks like a mackerel in the hot sunlight." — 1965

forms

stank like a mackerel · stunk like a mackerel · stinking like a mackerel · stinks like a mackerel

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