Jeera water. Jeera, or cumin, can reduce bloating and soothe an irritated bowel. People who suffer from diarrhea and gas may wish to consume jeera or cumin water to soothe their gut and find some relief. Jeera water helps the body break down food better and prevents the build-up of excessive gas. A tablespoon of cumin seeds can be boiled in two cups of hot water and left to cool for 10-15 minutes. Consuming the water after a meal will help prevent gas and ensure a smooth passage for any waste.