Whenever I eat a meal on UA, usually in Business class, it is followed by a slight upset stomach and how to put this in a nice manner "gas". This generally happens on overnight flights across the Atlantic or the Pacific. This seems to happen only with the food on the flight, other than that, this uncomfortable situation does not happen to me at meal time anywhere else. Does anyone one else notice this after a UA meal? Fortunately I now carry Tums or Alka Seltzer with me.