Air that is free of pollutants such as particles, sulfur dioxide, nitrogen oxides, viruses, microbes and mites and has a high oxygen content is called clean air. Fuel consumption should be reduced to breathe clean air, Clean energy sources and quality fuels should be used, Fuels should be burned properly in stoves and heaters, Thermal insulation should be preferred in buildings and houses, Heating and stove chimneys should be cleaned.