What Causes Carbon Monoxide Poisoning From Vehicles Carbon monoxide poisoning from vehicles kills more people every year than most realize, and the frightening part is that the majority of victims never see it coming. You cannot smell it. You cannot taste it. You cannot see it. By the time your body signals distress, your brain may already be operating at a fraction of its capacity. According to the CDC, non-fire-related CO poisoning sends over 100,000 Americans to emergency rooms annually, with vehicle-related exposure accounting for a significant and consistently underreported share. This guide breaks down the actual biochemistry, the mechanical failures most mechanics miss, the legal gaps regulators are still fighting to close, and the technologies being developed right now to keep you alive.