Shushing sounds have long been used by parents as a simple way to soothe infants, mimicking the steady noise babies hear before birth, and that familiar association is why the effect translates so well to video. Online, creators use short shhh clips to mark quiet moments, calm chaotic family footage, or add a gentle, sleepy atmosphere to parenting, ASMR and relaxation content. Because the sound needs no words or explanation, it works across languages and audiences, and its simple, repetitive nature makes it easy to loop for longer sleep or study scenes.