Espirro is the Portuguese word for sneeze, and this version became popular as a shared WhatsApp audio, where short, exaggerated sounds are passed between friends and reused in group chats. Bass boosting, a style that exaggerates low frequencies for comic effect, turned an everyday atchim into something louder and more absurd than the original sneeze. That contrast helped it travel beyond its first chats into meme edits and reaction clips, where it still works because everyone recognises a sneeze instantly and the bass makes the familiar sound feel unexpectedly dramatic.