I think you mean "Put a damper". This is an idiom made from the word "damp" or a little wet. It comes from water dampening fire.
The idiom means when an exciting/fun event is ruined or made less fun by another bad event.
Example: "the rainstorm really put a damper on the picnic"
Example 2: "John told us he had lost his job, which put a damper on the celebrations."