Smell a rat: feel that something is wrong感到有什么不对劲一个厨师正在做一锅汤,突然闻到耗子的味道。不消说,一定有什么不对劲了,一粒耗子屎足以坏了一锅汤呦。比如说: Every time this guy visits me, one of my books disappears. I don't want to say he steals them, but I really smell a rat. 这个人每次来我这儿的时候,我都丢一本书。虽然我不想说他偷我的书,但我确实觉得不对劲。