A couple days ago the gas/CO2 detector alarm went off. We were not cooking and not propane was in use. I couldn't think of any reason that it would have happened... shut off all propane just to be sure. Since then. I turned propane back on and no more problems. But it is still bothering me what may have caused a false alarm. The detector is near the fridge, so maybe an ammonia leak?

Has anyone had a false alarm?