I once got very sick on the plane trip down, bizarrely enough.
Not really bizarre. You probably had the chicken.
It is awful to get sick like that on a plane but at least there is a bathroom. I picked up some kind of bug in Switzerland, of all places. It first hit me on a bus through the Alps, a bus with no bathroom. I thought I would die between stops. It hung on for about 6 weeks, getting a little better each week.