Ahh, sympathetic vomit syndrome. Luckily (or not) since I have two kids I'm not so prone to it anymore. My daughter had sort of a trick tummy - sometimes food stayed down, sometimes not - and once you've caught a few recycled hotdogs barehanded the vomit ceases to be an issue.
I almost lost it tho during my first ride-along a few weeks ago. I was stuck in the back of the ambulance while driving around and...well...I've been known to get carsick, on occasion. So I'm nauseated already when we go pick up this lady who is massively, massively drunk on what had to have been the cheapest form of malt liquor available. She wants mental health services so off we have to go on a 20 minute jaunt to the closest hospital with a mental health ward. Lo and behold, five minutes into the ride, the spewing begins and UGGGGGGH. I didn't even get any on me but it was in my clothes, my hair, my sinuses...I'm not much of a beer drinker. If I were, I'd have been *MAD* at that chick because after that night I cannot stand the smell of beer, ever again. I have no idea how I managed not to boot all over the place myself.