Home Natural Gas Detector My Natural Gas/Carbon Monoxide Detector Went Off With No Leak?

My natural Gas/Carbon Monoxide detector went off with no leak? - home natural gas detector

My gas carbon monoxide detector went when I was in the room one day and said that the gas detected. I was scared and left the house immediately. It was so strong that I need to remove at the end of the battery and again Do not go running back, but I was nervous, so I went to buy a backup sensor. He has a house and finally went, and in the same night. I called the gas company came out and said it was not leaking. Both detectors have continued to fire at random, until I can not bear it and the batteries in both. No smell of gas at all. The only things we are working in our houses with our grill and heating gas. Is it possible that the detectors are another type of gas (radon) or something like the gas company, which said everything was good, but I still do.