The phrase is in Mandarin and translates roughly to his ash is a bit smelly, which explains its use as a niche Chinese meme reaction online. Because there is no widely documented source scene, the clip spreads mainly through soundboards and short video edits where the line itself is the joke. Its humour comes from the specificity of calling out ash rather than a more general bad smell. Creators reuse it for dusty objects, smoking jokes and gross-out reveals, and its short length makes it easy to layer over a quick visual gag.