| | | Standards also allow indirect ventilation by taking air from an adjacent room, as long as this room is ventilated directly from outdoors, is not a bedroom and is not at a high risk of catching fire (e.g. a carport, a garage, a warehouse etc.). In addition to this, the adjacent room must not have a | | lower pressure compared to the room to be aired because of the presence of an appliance powered by any type of fuel (e.g. a fireplace, a stove, etc.) or of an extraction device for which an air inlet has not been provided. The air can flow in from the adjacent room through permanent openings or, if a | | door divides the two rooms, it can enter by increasing the gap | | up) and to prevent odours from going towards other rooms in | | |