Which factor does NOT contribute to poor indoor air quality?

Proper ventilation plays a crucial role in maintaining good indoor air quality. It helps to dilute indoor air pollutants, such as odors, moisture, and harmful substances like volatile organic compounds (VOCs), by bringing in fresh outdoor air. Proper ventilation can also help regulate humidity levels, reducing the likelihood of mold growth and dust accumulation. When a space is adequately ventilated, it minimizes the concentration of contaminants and creates a healthier indoor environment. Therefore, proper ventilation is a beneficial factor rather than a contributor to poor indoor air quality. In contrast, excessive dust accumulation, mold growth, and high levels of VOCs are all significant contributors to deteriorating indoor air quality, as they can lead to various health issues and discomfort.