Which of the following is a potential consequence of inadequate ventilation?

Inadequate ventilation can lead to the accumulation of harmful pollutants within a confined space. When there is insufficient airflow, contaminants such as dust, gases, smoke, and volatile organic compounds (VOCs) cannot disperse effectively. This buildup can pose serious health risks to individuals exposed to such environments, potentially leading to respiratory problems, headaches, and other serious health issues. Ensuring proper ventilation is crucial for maintaining a safe and healthy atmosphere, particularly in places where chemicals or pollutants are present.

The other options reflect positive outcomes that typically result from good ventilation practices. Increased energy efficiency and better temperature regulation can be achieved through effective ventilation systems, while improved worker productivity is often linked to a comfortable and safe working environment that adequate airflow helps to create.