This siren has shaved years off my life as I nearly have a heart attack every time it goes off. It's part of our agent onboarding to change the sound or remove it. And I can confirm the the sound itself is set to none. I've tried different sounds too but when I launch chat for the first time (and as the admin, I don't take chats, so I'm always set to invisible) I get about a half second of the alarm sound before it cuts off.
Why?