Emptying the pouch frequently and keeping the end of the pouch clean will prevent odor. An easy way to do this is, when emptying the pouch fold up the open end as you would turn up a shirt sleeve, empty, and apply the clamp. If you experience difficulty in emptying the pouch, a tablespoon of oil or some Periwash in the pouch helps make the contents empty more easily. Most ostomy pouches manufactured today are made of odor-proof materials. DO NOT put pin holes in the pouch to release gas.
Some pouches have a gas release filter built into the pouch.
If your appliance does not have a filter, they are available for attachment to any type of pouch. A third means to control odor is the use of an external deodorant. Excellent products are available that neutralize odor rather than masking it and arc helpful during and immediately after emptying a pouch in a public restroom. Some pouches if worn for prolonged periods, even though kept clean, will eventually react to perspiration and give off a foul odor. The experience of having a new ostomy can be quite frightening if one does not understand what is normal in stoma appearance and ostomy function and what is not normal.