Air quality control refers to the measures and practices implemented to maintain or improve the cleanliness of the air we breathe. This involves monitoring pollutants such as carbon monoxide, sulfur dioxide, and particulate matter to ensure they remain within safe limits. Governments and organizations often set regulations to reduce emissions from sources like vehicles and factories. Effective air quality control can include strategies like using air filters, promoting public transportation, and encouraging the use of renewable energy sources. These efforts aim to protect public health and the environment by reducing the harmful effects of air pollution.