A system for use in venting gas from an interior of an ostomy collection pouch is described. The system is removable and/or reusable in other medical devices. A flange is configured to affix the system to a hole in a wall of the ostomy collection pouch. The flange may have a straight or a curved configuration. In examples, the flange has a 90-degree configuration. Further, the system includes a manual or a passive filter to remove odor from the gas.