Dhimmi   10 #13 Posted October 23, 2008 those fires with the catalytic converter COULD be dangerous as the converter only lasts so long,just like a car's,if it becomes clogged up you will get carbon monoxide coming into the room have a carbon monoxide detector in your room with these fires to be safe... Nonsense. They have been very thoroughly tested, approved, and are guaranteed to last for at least 27 years, generally. Besides, I'd be surprised if they didn't have built-in CO cut-offs. Share this post Link to post Share on other sites Share this content via...