Sniff sounds like this one have long been used in cartoons, comedy sketches and online videos as a quick shorthand for crying, a cold or quiet disappointment. Because the sound is so short and instantly recognisable, creators on short-form video platforms began using it as a reaction cue, often over a still image or a failed attempt. It spread through memes and reaction edits, where a single sniff can replace a caption or a longer emotional scene. Its simplicity keeps it useful: it works across languages, needs no context, and fits the fast pace of short clips.