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You may have trouble digesting your food. I suggest you go to a health food store and get digestive enzymes and see if this helps. Be sure to go to a health food store for this because many supermarkets and pharmacies have low-quality supplements.
In the future, if you do get this flatulence, try taking activated charcoal. This should absorb the gas so you don't have it and/or so it doesn't smell so foul. If you're going to take it often, be sure to drink 2/3 your body weight in ounces of water daily to avoid constipation and dehydration. For example, if you weigh 115 pounds, 2/3 of that is 76 and 2/3. Converting that number to ounces of water, that equals 9.6 cups of water daily (8 ounces per cup).
In the future, if you do get this flatulence, try taking activated charcoal. This should absorb the gas so you don't have it and/or so it doesn't smell so foul. If you're going to take it often, be sure to drink 2/3 your body weight in ounces of water daily to avoid constipation and dehydration. For example, if you weigh 115 pounds, 2/3 of that is 76 and 2/3. Converting that number to ounces of water, that equals 9.6 cups of water daily (8 ounces per cup).