Place this clip at the cut where the bad idea appears, then follow it with a wrong answer game show sound if the moment needs a firmer verdict, or lead in with a confused reaction before it to build the refusal.
關於此聲音
A very short voice clip of someone saying no no no three times in a soft, flowery tone, lasting just over a second. The delivery feels teasing and lightly horrified rather than angry, turning a refusal into a joke. It gives a mistake or bad suggestion a gentle, playful pushback that keeps the moment light.