A simple (and realistic) event you could add is to have a small chance of a fire starting if combustible walls, floors or furniture are placed next to campfires. Maybe even smaller chance next to torches and fueled stoves and smithies. Increase the risk if there are no colonists in the room with the fire hazard.
Add torches to the list. But I think it'd come around to be just as annoying as Zzzt! (though really, placing a campfire indoors on a wooden floor without a chimney is just begging for disaster).