smell a rat
US /smɛl ə ræt/
UK /smɛl ə ræt/
1.
sospechar, oler a chamusquina
to suspect that something is wrong or that someone is trying to trick you
:
•
When he offered to pay for everything, I started to smell a rat.
Cuando se ofreció a pagar todo, empecé a sospechar.
•
The police smelled a rat when the suspect's story kept changing.
La policía sospechó cuando la historia del sospechoso seguía cambiando.