I made a batch of grapefruit "wine" recently. It was just Florida's Best grapefruit juice + yeast (IIRC it was Cote des Blanc). It's got kind of a funky nose on it. Like sulfur, but slightly different. I used a bit of yeast nutrient, but I think the yeast was still pretty unhappy due to the low pH. It still smells strongly like grapefruit juice, so it might just be the aroma of the juice, and not actually yeast-produced sulfur.
Anyway, I didn't make it to drink by itself (I made it for radlers) but it's pretty undrinkable on its own. Mixed with a pilsner it's pretty nice though.