How can carbon monoxide gas enter the vehicle compartment?

Carbon monoxide gas can enter a vehicle compartment primarily through leaks in the exhaust system. The exhaust system is designed to channel harmful gases away from the engine and out of the vehicle. When there are cracks, holes, or leaks in components such as the exhaust manifold, pipes, or muffler, carbon monoxide can escape into the passenger area. This poses a serious health risk because carbon monoxide is a colorless, odorless gas that can cause suffocation at high levels.

While windy conditions, excessive speed, and bad weather might influence how the vehicle operates or the passenger experience, they do not directly cause the entry of carbon monoxide into the vehicle. Thus, the presence of a properly functioning exhaust system is critical to ensure that harmful gases do not infiltrate the vehicle's interior. Regular maintenance and inspections of the exhaust system are essential to prevent such leaks and ensure the safety of all occupants.