Improving IAQ involves several strategies: 1. Ventilation: Ensure proper ventilation by using exhaust fans and opening windows regularly. 2. Air Purifiers: Use HEPA filters and air purifiers to reduce airborne particles. 3. Regular Cleaning: Frequent cleaning reduces dust and allergens. Use vacuum cleaners with HEPA filters. 4. Humidity Control: Maintain indoor humidity between 30-50% to prevent mold growth. 5. No Smoking: Prohibit smoking indoors to eliminate tobacco smoke exposure.