Honestly, the hazards CO is not to be taken lightly. Individuals will react differently to the same exposure levels, as in children can't take as much as adults. It is colorless and odorless and therefore easy to take for granted, it can get you before you can think to react to get to fresh air. Be careful.
I keep clothes and non freezable basics in my trailer and always have at least 1 full propane cylinder on it just in case my furnace goes out or other tragedy that makes me move out of the house. Always a good idea to have a plan "B".