The Presence of Ventilation in Any Room Is Mandator. BUT MANY PEOPLE LIVING IN WOOD HOS ARE MISTAKEN, Thinking that FACT THE WOD PASSES AIR IS ENUGH to VENTILATION OF THE ROOM. In Addition, if the House Has a Stove or FirePlace, This Contributes to Natural Air Circulation Without Special Devices, Sincy Air Flow IS Carried Out During the Burnin G.