I always thought that CO was a danger and so camping stoves shouldn’t e used in enclosed spaces.
I believe that the OLD camp stoves utilized CHARCOAL to generate cooking heat. Those could well be dangerous in closed spaces.
In the Coleman type stoves, they utilize PROPANE as a fuel. Many many homes also use PROPANE for both heating and cooking. A little ventilation insures safety. The big safety act with the Coleman is to instantly disconnect and remove the little gas tank when done A very strong internal spring powered closure insures no problems. Also the tank used is quite little and takes up next to no room.