This topic is about a person who recently started using a Hollister 2-piece ostomy pouching system and is experiencing a mysterious odor, suggesting a possible leak. They are seeking advice and sharing their experience with others who might have faced similar issues. Here are some helpful insights and advice based on their experience and feedback from others:

1. Consider trying different manufacturers to find the best fit for your body:
- Coloplast SenSura Mio Click is noted for better adhesion and comfort by several users.
- ConvaTec two-piece systems are another option to explore.
- Experiment with various barrier rings like Coloplast Brava Seal, ConvaTec Eakin, and Hollister Adapt, as well as barrier extenders.

2. Inspect the pouch carefully after removal to identify any micro-leaks:
- Look for hairline splits in the thin Hollister plastic, especially near the coupling rim, which may only be visible when flexed.
- Use a "clock face" method to check the Eakin seal and determine where seepage might start, such as at 3 o'clock or 6 o'clock.

3. Reinforce or adjust the tail-drain on Hollister bags:
- Use an IGGIE clip or a bobby pin to secure the Velcro drain and reduce the bag's length.

4. Use support devices to prevent tugging and enhance security:
- Consider Nu-Hope Corp. support belts, vendor belts, or wider supportive wraps, which can be worn continuously.

5. Ensure the tail closure is emptied and cleaned thoroughly:
- Residue in the Velcro can cause odor even if there is no leak.

6. Assess your body contours and movements:
- Sit, bend, and locate skin creases, then shape or stack your barrier ring accordingly. Avoid over-filling the pouch to prevent it from pulling on the wafer.

7. Educate yourself with resources:
- The United Ostomy Association of America (UOAA) and Ostomy101.com provide valuable information on appliances, diet, travel, and local support groups.

8. Be prepared for some trial and error:
- Sample items are available for free from major vendors like Hollister, Coloplast, and ConvaTec. It's worth testing different products even if one seems to work well.

9. For those who irrigate, leaks are rare, but be vigilant for thin-plastic splits that can still occur.