Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I have an indoor live steam layout that I run quite often with a CO detector/alarm right above it and have never had a problem. Of course I never run it more than an hour at most, more often for a half hour so that may be my saving grace. It may not be the safest setup in the world but I think with proper precautions it's not that dangerous.......but that's just my opinion.