This topic is about dealing with gas build-up in an ileostomy bag, which can be particularly troublesome at night. The person sharing their experience finds that their pouch sometimes inflates so much while they sleep that it leaks, even though they use bags with built-in filters. They are looking for advice on which foods might be causing the gas and how others manage to prevent their bags from filling with air.

Here are some practical tips and insights:

1. Burp the pouch:
- You can slightly open the coupling or top of a one-piece bag, or crack open the tail of a drainable pouch, to let the air escape. Make sure to support the pouch to prevent any output from spilling.
- This method works with any brand that has a resealable outlet and doesn't require any special equipment.

2. Night-time routine to prevent over-inflation:
- Consider setting an alarm for the middle of the night, like 3 a.m. or 4 a.m., to wake up and check the pouch. You can let out the gas or empty the pouch if needed.
- Although this interrupts sleep, it significantly reduces the risk of waking up to a leak.

3. Dietary tips for reducing gas:
- Many people notice increased gas after eating foods with skins or membranes, such as onions (often the worst offender), peas, beans, and similar legumes.
- Limiting these foods, especially at dinner, can help reduce overnight ballooning.
- A general approach is to enjoy everything in moderation. There's no need to completely avoid most foods unless they specifically cause issues for you.
- Nuts are sometimes avoided for other ostomy-related reasons, like the risk of blockage, rather than for gas.

4. Further resources:
- Hospital and ostomy association handouts often list foods that commonly produce gas or odor. You can find an example here: https://www.health.qld.gov.au/__data/assets/pdf_file/0026/152558/gastro_ileostomy.pdf

5. Filters can help but are not perfect, so you may still need to manually vent the pouch at times.