Is a no brainer that an enclosed space needs serious ventilation safeguards in place with gasoline powered engines. Even forklifts or floor burnishers running on propane can put out more monoxide than an air system can handle when the machines are out of adjustment or have poor emission standards. I went away from using the old briggs engines and into Onans after almost doing myself in back over a decade ago. Was up the mountain stripping a floor one time when a storm cloud came through bogging the location down with total humidity. Floor would simply not dry by any means other then dry burnishing it which took about 3 times the normal time. When I came out into the mountain air the headache came. It came on like there was gonna be no tomorrow. By the time I flew down the mountain it was 3 fold worse and I was dying about ready to pass out with nausie. Within like 5 minute on straight oxygen I was ok. The oxygen attaches to the monoxide and takes it out..otherwise ya die... I suspect I lost many brain cells that night and messed up my memory forever. Used to do rubicks cube in a half minute and now I just stare at it dumbfounded. ..please forgive if sometimes I mention or ask about things more than once..
