Place it at the end of a denial scene, after Sudden Suspense sets up the question, then follow it with No No Wait Wait when the other person starts to argue back.
關於此聲音
This is a spoken denial lasting about ten seconds, with a voice insisting it saw nothing at all. The delivery is blunt and unconvincing in a way that makes the excuse funnier than a straight no, turning a simple refusal into a small performance. It lands as playful and awkward, perfect for pretending you missed something everyone else clearly noticed.