A young married couple was cooking food on a hibachi in their closed-in back porch. After about a half hour, the wife collapsed and died. Her husband felt drowsy but managed to call an ambulance. The cause of death was carbon monoxide poisoning. Nowhere on the ten-pound package of charcoal was there a warning that, because of the production of carbon monoxide, the coals should be burned in a well ventilated area outdoors.