Is there a natural cure for flatulence or gas problem?

Yes. You may have food allergies or carbohydrate intolerance causing you to be gassy. Consider a trila of no dairy and no gluten first. If that does not help, consult your physician for either testing or a more detailed elimination diet trial. Short answer...Try enzymes with meals, try peppermint oil with meals.
Antiflatulence diet. Try avoiding the following one at a time-lactose, high fiber diet, legumes, high fructose content food.