It's entirely possible. I could vomit 3 feet away from you, and all you'd hear is the puke hitting the floor. I developed the ability to stealth vomit when I was a secret alcoholic and didn't want people to get suspicious.

I vomit ever few months (yay cyclical vomiting syndrome) and no screaming. I'll be angry but not screaming. And more like. "How dare you body. You can digest this you dumbass stomach". But the actual vomiting is just. Retching sounds?

I tend to sing Rigoletto when I baritomit, I assumed everyone was the same

i reckon it’s maybe an attempt at a new name for projectile vomiting? i know last time i got stomach flu was the only time i can remember making involuntary sounds while vomiting.