Plus, you might want to get them Working on their Cooking Skills as soon as they move in or whenever you can. That way, you don't Incinerate your House.
Buy a Smoke Alarm ! Put it above the Cooker so that it Rings out for the Fire(wo)man! 'Nuff said! There should an Item for that in Miscellanious or Electronics.
Well I hope your sims had better luck staying alive than mine did cos the stupid man or woman in the family often managed to get themselves killed by kitchen fire :(
Stupid - and the sims panicking never made it easy to call the emergency service fire to come and put it out if they couldn't do it themselves.