If you're planning a cruise and need a discreet way to dispose of used colostomy pouches, you're not alone. Many people look for odor-control disposal bags to make their travels more comfortable. Here's some advice and insights that might help you find the right solution:

1. You might want to try Bag-It-Away Ostaway X-Bag Ostomy Disposal Bags. These are dark green or black, have a zip-seal, and are completely odor-proof when closed properly. Many users find them more effective than regular Ziploc bags.

2. Some appliance manufacturers like Hollister and Coloplast offer pouches with built-in, opaque, heavy-duty disposable bags. You can double-knot or zip-seal these and dispose of them. Plus, cruise ships usually have daily cabin trash service, which helps minimize odor issues.

3. For low-cost alternatives, consider:
- Baby-diaper disposal bags in blue or other opaque colors, available in the infant aisle.
- Doggy doo-disposal bags with tie-tops.
- Produce bags on rolls from supermarkets; using two or three layers and knotting them can help.
- Generic black "smell-proof" ziplock bags available on Amazon.

4. Other commercial products like BOSE Disposable Bags, which are white and odor-blocking, can be found on Amazon.

5. When using these bags, a helpful tip is to place a couple of squares of toilet paper in the pouch opening, roll it, and insert the wafer and any wipes into the disposal bag. Make sure to zip it completely before discarding. It's also a good idea to inform cabin stewards not to open sealed bags, as they contain bodily waste.

6. For general cruise advice, any solid-colored, well-sealed bag can effectively hide contents and control odor. You can also use standard ziplock bags inside an opaque outer bag for added discretion.