let o, a=new AudioContext();
document.addEventListener("mousedown",function(){
if (o) {o.stop(); o = undefined}
else{ o=a.createOscillator(); o.type="sine"; o.frequency.value=100;
o.connect(a.destination);o.start()}
})
It sounds like a pitch that you might hear from an airplane propeller, which leads to the question why airsickness exists if the antidote is ambiently present?
CTRL+SHIFT+I and in the console
If you click anywhere it will start/stop.