stink like a polecat

The European polecat ejects a foul-smelling secretion.

stink like a polecat (third-person singular simple present stinks like a polecat, present participle stinking like a polecat, simple past stank like a polecat, past participle stunk like a polecat)

1. (simile) to have a bad smell, mostly referring to human body odor

• stink like a mackerel