smell something fishy
覺得可疑，覺得有問題
口語·表達直覺懷疑
英文釋義
to suspect that something is not right or seems suspicious
例句
The deal seemed too easy; I smelled something fishy right away.
典故來源
源自魚市腐敗氣味，比喻事物可疑或不正當，19世紀起流行。