What is considered the best basic defense against air contaminants?

Good ventilation is indeed considered the best basic defense against air contaminants because it helps to ensure a continuous supply of fresh air while diluting harmful airborne pollutants. By enhancing airflow within a space, good ventilation reduces the concentration of airborne contaminants, thereby lowering the potential for exposure and associated health risks. This can be particularly important in enclosed or poorly ventilated areas where pollutants can accumulate.

In contrast, personal protective equipment, while effective for specific scenarios, is often viewed as a secondary line of defense when ventilation is insufficient. Regular breaks can help reduce exposure time, but they do not actively eliminate contaminants from the air. Protective clothing provides a barrier against certain materials, but it does not address airborne pollutants directly. Overall, good ventilation stands out as a proactive approach to maintain air quality and protect health.