Indoor pollution refers to the presence of harmful substances in the air inside buildings, which can negatively affect our health. Common sources of indoor pollution include cigarette smoke, mold, dust mites, and household cleaning products. These pollutants can lead to respiratory issues, allergies, and other health problems, especially for vulnerable groups like children and the elderly. To reduce indoor pollution, it's important to improve ventilation and use air purifiers. Regularly cleaning surfaces and reducing the use of harsh chemicals can also help. By being mindful of the air quality in our homes, we can create a healthier living environment for ourselves and our families.