Carbonated milk is the result of human curiosity going far, far too far. We thought "let's carbonate soda!" Perhaps, some people don't like the carbonation, but it exists for logical reason. Soda just ain't soda if it ain't bubbly. Then we thought "let's carbonate water!" For weird people who like soda for the carbonation but not the flavor.
But then we went too far.
Carbonated milk is a freak of nature and deserves no respect if we could hope to offer it any. We keep saying "we can do anything," but that doesn't mean we should. Maybe we've already gone too far. When I looked up "carbonated milk," I expected to only get people entertaining the thought.
But it is real. You can google it.
What does it taste like?
What, you're asking me? I don't even drink carbonated cola. How the hell would I know what carbonated milk tastes like?
Whose idea was this?
I do not know. I'd suspect the Dark Universe, but I have never tasted carbonated milk, and I do not expect for me to do it any time in the near future.
Where can I get some?
No.