Last time I travelled I wasn't feeling quite well just before boarding the plane. I either had eaten something wrong or a flu just appeared. The thought of having to vomit during the flight made me panic a bit. The pocket in front usually contain these paper bags that act as a "vomitorium", but I can hardly imagine them being useful especially with the cramped space you have these days. I tried to induce some preemptive vomiting before boarding without success but luckily a good powernap before boarding did the trick to have a nice trip.
So what is the best approach to deal with a stomach going bad on you during a flight or just before boarding. If your really feel like vomiting, where or how to do that best?