If someone may be experiencing carbon monoxide exposure, the recommended immediate action is to:

• A. Seek fresh air and medical evaluation
• B. Return inside to finish the task
• C. Take aspirin
• D. Ignore the symptoms

Answer: (A)

When carbon monoxide exposure is suspected, the immediate action is to get to fresh air and seek medical evaluation. CO is colorless and odorless, so people may not realize they’re being poisoned, and continuing to stay in the building can allow exposure to worsen. Moving to outdoors or to well-ventilated air stops further inhalation and starts the process of clearing CO from the blood, which helps prevent tissue injury from oxygen deprivation. Medical assessment is important because CO poisoning can produce symptoms that mimic the flu and, in more serious cases, can be life-threatening; treatment often involves oxygen therapy to accelerate removal of CO from the bloodstream.

Returning inside to finish the task would keep you in the toxic environment and risk higher exposure. Taking aspirin offers no benefit for CO poisoning and can complicate medical care. Ignoring the symptoms is dangerous because CO can cause serious injury or death if not promptly addressed.