Rock, we added the generator also. I had the same concerns you mentioned. I also added a carbon monoxide detector in the bedroom. Mounted it below the height of our heads, so hopefully it would sound before it was too late. There is a propane/carbon monoxide detector on FBTS between the 1/2 bath and pantry doors.
2015 Jayco Pinnacle 36 FBTS
2014 Ram 3500 CC, CTD, 4X4, SRW, SB
B&W Campanion Hitch
16 ft.Nova Craft Prospector Canoe