Place it just before the reveal in an edit, then follow it with the Awkward Moment sound to hold the reaction, and finish with the Anime Ahh sound when the character finally reacts.
이 사운드에 대해
This is a short sniffing clip, lasting just over three seconds, centred on the sound of someone sniffing. It feels awkward and a little nosy, like someone has caught a smell they were not meant to notice, and that small moment of suspicion makes it easy to laugh at.