I always drink water so I wouldn't have that problem.
But I remember when I was an army cadet in the 6 week summer Leadership course. It was graduation day, apparently one of the hottest days that summer and I was feeling special so I didn't put much thought behind eating chocolate pudding as a part of my breakfast. In the words of Ron Burgundy "Milk was a bad choice".
Once the battalion (1,200) was marched onto the concrete square under that blazing sun and we were just standing at attention I started feeling really crappy allover and my vision was going whacky. Then I took a knee like instructed for such circumstances when you feel like puking and was escorted off.
But after a few sips of water my pride urged me back onto the square to finish what I started. At first those watching me were reluctant to let me back on, but they saw the pride I had and the let me back on the square. Stood there some more and felt kinda crap still, but felt a little better once I started moving in the march pass and was being cheered on, then marching off the square. In the end it was worth getting back in there but I also learned a lesson from that dairy product combined with blazing heat over concrete.