Which method is commonly used to improve indoor air quality?

Increasing ventilation is a widely recognized method for improving indoor air quality. By introducing more outdoor air into a space, ventilation helps to dilute and remove indoor pollutants such as volatile organic compounds (VOCs), smoke, dust, and other airborne contaminants. Proper ventilation can also help to regulate humidity levels and reduce the concentration of carbon dioxide, which can build up in poorly ventilated areas, potentially leading to health issues such as headaches, dizziness, or long-term respiratory problems.

In contrast, while decreasing humidity levels can indeed have positive effects on air quality, it is not as universally applicable as ventilation in addressing a broad range of pollutants. Using air fresheners may mask odors but can introduce more chemicals into the air, potentially worsening air quality. Installing carpets might trap dust and allergens, which could negatively impact those with sensitivities. Therefore, increasing ventilation stands out as a fundamental and effective strategy for ensuring cleaner, healthier indoor environments.