The topic is about a new ostomate who is using a Convatec two-piece pouch with a charcoal filter, which is supposed to be self-venting and odor-free. However, they are experiencing stool odor and are concerned they might be doing something wrong. They are looking for advice on how to eliminate the odor, especially since they will be changing to a new pouch with the help of a stoma nurse soon.

Here are some helpful insights and advice:

1. It's normal for a little odor to escape occasionally from any system. Many new users worry about this, but often, people around them cannot detect the smell. With time and experience, this concern usually decreases.

2. It's a good idea to try different pouches and brands to find the one that seals and vents best for you. Experimenting is normal, especially in the beginning.

3. The Convatec two-piece drainable line works well for some users, but it can still allow an occasional whiff. Sometimes, the perception of odor might come from residue near the nose rather than actual leakage.

4. Consider trying the Coloplast Two-Piece Click System as an alternative. Coloplast offers free samples if you request them.

5. Use dedicated ostomy deodorants inside the pouch. Some popular options are M9, Na’scent, and Safe & Simple. One person mentioned they plan to try OstoFresh.

6. Charcoal filters can fail if they become wet or clogged with effluent, which can cause odor. If this happens:
- Keep the filter as dry as possible, for example, by covering it while showering.
- Replace the pouch more often. Some users change it daily or every other day because the filter stops venting once it gets clogged.

7. For high-output ileostomies, a drainable pouch might be more practical than an enclosed disposable one. Frequent pouch emptying can reduce pressure on the filter and help with odor control.