If I know I can't be home and close to the bathroom, I cut down the dose so I still get some cleansing without the urgency and frequency. On Oxypowder initially I think I did get some bad breath stuff. I agree with the person above - I would think it's detox and a good thing.
When you are using Oxypowder for cleansing, the goal is to have liquid bowel movements. The Oxypowder is dissolving the junk into gas and liquid. If it is too uncomfortable for you though, you can just lower your dose and go slower.
They say you know you are cleansed when your bowel movements become solid again, even on the same dose.