Here is Asia old-style houses have a central atrium. Above most windows are holes. The entire apparatus acts like a chimney, sucking air through the house. It

Here is Asia old-style houses have a central atrium. Above most windows are holes. The entire apparatus acts like a chimney, sucking air through the house. It was also common to place a large tub of water near an outside door. As it evaporated, it sucked air through the house, improving through-flow of air.