If adequate ventilation, regular exercise, pay attention to the prevention of influenza, the majority of people can be far away from the demons of tuberculosis.
Ifadequate ventilation, regularexercise, pay attention to the prevention of influenza, the majority ofpeoplecan befar away fromthedemons of tuberculosis.
Smoke travels upwards, and if smokers are confined to the top level and adequateventilation is in place (be it an open window or a small fan), then there can be no cause for concern to those non-smokers who sit downstairs.