SO2

SO₂, or sulfur dioxide, is a gas produced mainly from burning fossil fuels like coal and oil, especially in power plants and industrial processes. It has a sharp, pungent smell and can irritate the respiratory system, causing coughing and throat discomfort. When released into the atmosphere, SO₂ can combine with water vapor to form acid rain, which harms ecosystems, soil, and water bodies. It also contributes to the formation of fine particles that can worsen air quality and respiratory diseases. Controlling SO₂ emissions is important for protecting environmental and human health.