Final answer:
When handling volatile substances or poisonous vapors, one should always work in a well-ventilated area to minimize the inhalation risks and ensure a safe working environment.
Step-by-step explanation:
When working with volatile substances or poisonous vapors, always work in an area that is well-ventilated. This means that you should conduct your experiments or handle these substances in rooms where there is a steady flow of fresh air or in laboratories that are equipped with fume hoods. Proper ventilation is critical because it helps to dilute and disperse harmful vapors, reducing the risk of inhalation and potential health hazards. Additionally, it is essential not to inhale directly from chemical containers; instead, use your hand to gently waft the vapors towards you for safer detection. Open windows when possible to enhance airflow, and always ensure that you are following safety precautions and instructions provided by your teacher, such as using protective equipment and working away from flammable materials and open flames.