Originally Posted by Clonefarmer
If you are burning gas indoors a carbon monoxide detector might be a good idea.
Back up two posts I stated "use a CO detector in the room", I believe I had it covered about the air quality and safety for that room plus the big roof vent fan.
I have a multi gas detector in storage that I used when installing electrical power and lighting in gold mine shafts some years back.
They would go off with lights and buzzers with readings on a LCD window if you exhaled near the probe. We had to carry a oxygen generating mask in a stainless container like a stainless WWII water canteen. It would blister your lips if used due to the heat from the chemical reaction making oxygen.