Libanomancy is the study of incense and smoke. Capnomancy and Thurifumia are very similar practices. Smoke reading was practiced by the Babylonians, and by the Greeks who examined the smoke which rose from the food burnt in sacrifice to the gods for clues concerning the future. Thr Semang, a nomadic people of Malaysia, would build a fire each night before retiring. If the smoke rose straight up, the location was safe and they could make camp. If not, they would move on.