Put this clip just before the swat in a short edit, then follow it with a punch sound when the hand lands, and finish with a vine boom for the over-the-top reaction.
Über diesen Sound
This clip is a high-pitched mosquito buzz, stretched out for just over twelve seconds so the whine hangs in the air and feels close to your ear. It is irritating in a funny way, the kind of sound that makes you swat at empty air and laugh at how quickly it gets under your skin.