Incomplete combustion of carbon based fuels like coal, wood causes:
Both Respiratory diseases and asthama.
Air pollution is the contamination of air by chemicals, soot, dust and other particulates produced by a wide range of human activity — from driving and farming to industrial production and fireplaces. Air pollution can cause problems like burning eyes and nose, itchy irritated throat, and breathing problems. In the case of extreme exposure, some chemicals found in polluted air can cause cancer, birth defects, brain and nerve damage, and long-term injury to the lungs and breathing passages in certain circumstances. Therefore, incomplete combustion of carbon-based fuels like coal, wood causes respiratory diseases and asthma.