Placing a supporter by an open window to blow within air out encourages airflow during the home. Open home windows on transport vehicles (automobiles, vans, etc.) when safe and sound to do so. Screened windows need to be opened when climate and the out of doors air top quality permits (1). When home windows are not in a position to be opened, rooms need to be ventilated, as specified in Standards 5.2.1.1-5.2.1.6.