Place it just before a reveal in a short edit, then follow it with the dramatic sting, and keep a second use for the closing reaction shot so the suspicion builds across the scene instead of landing only once.
Over dit geluid
This is a short, sharp sniff lasting just over a second, a single nasal intake that sounds like someone catching a suspicious whiff. It feels playful and accusatory at once, turning a quiet moment into a knowing joke without a word being said.