smother out is when people exhale / expel oxygen oxygen from their major into the land
smothering is sadism. smew is duck. smother is smoke. breathing_event is air_respiration. mammal is air_breathing_vertebrate. dinosaur is air_breathing_vertebrate. out_of_breath is breath. hyperventilation is breathing. air_locomotion is movement_through_air. if smother occurs then cover occurs.