Not every patient requires hyperbaric treatment, and the decision should be made by qualified clinicians.
People who experience severe poisoning may require follow-up because neurological or cognitive complications can sometimes appear after the initial event.
The most important first step is to leave the exposure environment and obtain urgent medical care.
Do not attempt to treat suspected carbon monoxide poisoning at home.
13. Other Dangerous Habits That Can Make Sleeping in a Car Riskier
Carbon monoxide is not the only concern associated with sleeping in a vehicle.
Several other hazards deserve attention.
Parking in an unsafe location: A vehicle parked near moving traffic, on an isolated road, or in an area where stopping is prohibited can expose occupants to collisions, theft, or other dangers.
Ignoring extreme temperatures: A parked vehicle can become dangerously hot or cold, even when the outside temperature initially seems comfortable.
Leaving the vehicle unsecured: Sleeping in an unfamiliar or poorly secured location may increase personal safety risks.
Sleeping in an awkward position: Remaining in an uncomfortable position for a prolonged period may cause stiffness or discomfort. People with certain medical conditions should seek individualized advice about safe sleeping positions.
Using unsafe heating devices: Portable fuel-burning heaters or cooking devices inside a vehicle can produce carbon monoxide and other dangerous emissions. Never use equipment indoors or in a vehicle unless it is specifically designed and approved for that environment.
These hazards illustrate why a vehicle should not automatically be treated as a safe substitute for a proper sleeping space.
If you are too tired to drive, stop in a suitable location and arrange a safer way to rest.
14. What If Someone Is Found Unconscious in a Car?
Discovering an unconscious person inside a vehicle can be frightening, but your own safety must come first.
If carbon monoxide exposure is possible, do not enter a potentially contaminated environment or place yourself at risk while trying to help.
Call emergency services immediately and explain the situation, including the possibility of carbon monoxide poisoning.
Follow the dispatcher's instructions.
If the scene is safe and you can reach the person without entering a hazardous environment, check responsiveness and breathing according to your training.
If the person is not breathing normally, emergency dispatchers can guide you through appropriate resuscitation steps while help is on the way.
If there is a suspected gas hazard, trained responders may need to assess the environment before rescuers enter.
Do not assume the person is simply asleep.
Unconsciousness is a medical emergency, and carbon monoxide poisoning is only one of several possible causes.
Prompt professional assistance can be lifesaving.
15. The Five Most Important Safety Rules to Remember
The headline about a woman who allegedly turned on the air conditioner to nap in her car highlights a genuine safety issue, but the specific story cannot be verified from the photograph alone.
Regardless of the story's origin, the following precautions are useful.
First, never run a vehicle inside an enclosed garage. An open garage door does not guarantee safe ventilation.
Second, do not assume air conditioning protects you from exhaust gases. The system is not designed to neutralize carbon monoxide.
Third, keep the exhaust system in good condition. Investigate unusual exhaust smells, damage, or other signs of a possible leak.
Fourth, do not ignore symptoms that could indicate poisoning. Headache, dizziness, nausea, weakness, confusion, and unusual sleepiness can be warning signs.
Fifth, stop driving when you are too tired to remain alert. Find a suitable resting location and prioritize proper sleep rather than attempting to push through severe fatigue.
These rules are practical because they address the conditions that can lead to serious injury or death.
Final Thoughts: A Comfortable Car Is Not Always a Safe Place to Sleep
Turning on the air conditioner may make a parked car feel comfortable, but it does not guarantee that the cabin is free from carbon monoxide or other hazards.
Carbon monoxide poisoning is dangerous precisely because the gas cannot be detected reliably by smell or sight. In some circumstances, exposure can progress while a person is asleep and unable to recognize the warning signs.
At the same time, it is important not to assume that every reported death in a vehicle was caused by carbon monoxide. The specific incident described in the image has not been independently established by the photograph and caption.
The general safety lesson, however, is clear.
Avoid running engines in enclosed spaces, maintain your vehicle, take unusual symptoms seriously, and never rely on air conditioning as protection against exhaust exposure.
If you suspect carbon monoxide poisoning, move into fresh air immediately, call emergency services, and do not re-enter the affected area until it has been declared safe.
A few minutes of preparation can prevent a dangerous situation from becoming a tragedy. When fatigue sets in, choose a safe place to rest—and never assume that a running car is automatically a safe place to sleep.