I think everyone covered it pretty well. Kids just don’t have the same levels of immunity that adults do, and catch more bugs for a while.
I’d also bet that someone would be more willing to say, “My kid puked all over the place” but be more tactful about their own stomach issues. I probably wouldn’t tell a coworker I’d been puking, I’d just say I had a stomach virus.
Also, some people just puke more often. Even kids vary a lot. I have three, and my youngest is a hurler. He’ll throw up from coughing too much or from a lot of post nasal drip. He gags on his toothbrush, which always freaks me out. He’s only 4 so I help him brush his teeth and I get very jumpy worrying that he’s going to puke on me. I’ve even seen him gag when watching someone else eat something he doesn’t like or when he smells something strong (not necessarily a bad smell, just a strong smell). He’s way more sensitive than my other two kids, and of course vomits more often. Not every week or every month, but maybe a few times a year.
At least all of my kids are old enough now to know when they’re going to puke and run for the bathroom. They usually make it to the toilet. It’s a huge improvement over the days when they were too little to understand about puking in the toilet and would just let go wherever they happened to be. Ugh.