Likewise, camp stoves that use gasoline or solid fuel should always be used outdoors. Small electrical appliances can be used to prepare meals if you have access to an electrical generator. Wood can be used for cooking in many situations. You can cook in a fireplace if the chimney is sound. Be sure the damper is open.
Sparks can easily get into the ceiling and start a house fire.
Make sure any fire is well-contained. A metal drum or stones around the fire bed are good precautions. A charcoal grill is a good place in which to build a wood fire. Never use gasoline to get a wood or charcoal fire started. Be sure to put out any fire when you are through with it.