Place this clip right before the reveal in your edit, while the camera is still searching. Follow it with the Dun Dun Dun Sound Button once the source of the smell is found, then cut straight to the reaction shot without adding anything between them.
Über diesen Sound
This clip is a short sniffing sound, about 1.7 seconds of audible nose sniffing with no speech or music. It feels curious and playfully nosy, like someone catching a scent and investigating it up close. The exaggerated inhale makes it land as a light, silly reaction rather than a subtle background noise.