Actually the carbination in soda water can contribute to gas
. Is it possible that you are slightly lactose intolerant? That can cause gas
for sure. Here are some foods you can cut to see if it helps: beans, cabbage, onions, brussels sprouts, cauliflower, broccoli, asparagus and corn; fruits such as pears, apples, prunes and peaches; whole grain products and oats; milk, ice cream and cheese; and carbonated drinks. Obviously you can't cut them out of your diet all at once.