Just read a post on RORVT from a fellow whose wife is in hospital/nursing home and spends two weeks per month camped in parking lot using genset occasionally for electric heat.
His CO monitor/alarm went off and he discovered he had been overlooking wind direction when he fired the genset up; CO from exhaust was blowing under his (stickbuilt) trailer and coming in various places, including windows
It occurs to me that this is also a danger with a conventional RV furnace
because it vents exhaust right there outside the trailer for the wind to move around.
CO monitor is a good thing...
Pete and Rats