The document discusses indoor air quality and various air pollutants found in indoor environments. It outlines several common indoor air pollutants like carbon dioxide, carbon monoxide, formaldehyde, ozone, allergens, mold, radon and smoke that can negatively impact health and cause issues like difficulty breathing, lung damage, respiratory illnesses and cancer. It emphasizes the importance of good indoor air quality for worker productivity and lists steps like knowing your workplace, proper maintenance, reporting discomfort and identifying stress levels to protect oneself.