Final answer:
Upon exposure to injurious chemicals, one should flush the exposed body part for 15 minutes to minimize the risk of injury or chemical burns.
Step-by-step explanation:
If you are exposed to injurious chemicals, it is recommended that you flush the exposed part of the body for 15 minutes. This extended time ensures that the chemicals are thoroughly washed off your skin or eyes, thereby reducing the risk of injury or chemical burns. It is imperative to start the flushing process as quickly as possible and to continue for the full duration to mitigate any potential damage caused by the chemicals.