Indoor air pollution refers to the presence of harmful substances in the air inside buildings, which can negatively affect our health. Common sources include cigarette smoke, mold, and household cleaning products. These pollutants can lead to respiratory issues, headaches, and other health problems, especially for vulnerable groups like children and the elderly. To reduce indoor air pollution, it's important to ensure proper ventilation and use air purifiers. Regularly cleaning and maintaining HVAC systems can also help improve air quality. Additionally, choosing natural or low-emission products can minimize harmful chemicals in our living spaces, creating a healthier environment for everyone.