smother out is when people expel oxygen oxygen from their flowers into the land
apoptosis is physical_destruction_event. oxygen is flammable_gas. smothering is sadism. smother is smoke. floater is disease. herd_animal is air_breathing_vertebrate. thysanopter is insect. throwing_flowers is human_activity. dinosaur is air_breathing_vertebrate. if smother occurs then cover occurs.