Anytime you are dealing with flames, you should be careful. Kitchen fires are always a concern and over a quarter of house fires begin at the stove. Never set flammable objects atop a stove, the pilot light or a grill that is inadvertently turned on can quickly ignite such items. The same can be said about Jenn-Air parts such as cartridges. This is true of the oven as well; nothing should ever be stored inside the oven that is capable of burning. It is also advisable to keep a kitchen certified fire extinguisher on hand to tackle such fires. Water can also be used to extinguish fires unless it is a grease fire. (See below)
Always keep children away from hot grills, open ovens and boiling pots. Burns often occur when a child grabs a pot of boiling liquid from the stove top or touches a hot oven door or grill. When lighting a grill make sure that the lid is open so that there is no build up of gas and always use an extended grill lighter or fireplace match. If gas fumes have built-up there could be an explosive burst of flames when lit causing burns or starting a fire. This is also true when lighting a pilot light that has gone out on an oven. Be sure that the room has first been well ventilated. If you are unsure of how long the pilot has been out, this may mean turning off the gas at its source and airing the room for a time before relighting.