Place this clip as the final reaction after the reveal in your edit, then follow a beat later with the eww brother eww sound button for a second response, or precede it with a damn meme sound button to set up the payoff.
About this sound
This is a short voice clip, about six seconds long, built around a man bluntly announcing the smell of taint in a flat, matter-of-fact delivery. The line lands as pure gross-out disgust, the kind of revolted reaction that turns an unpleasant moment into a joke through sheer bluntness and lack of embarrassment.