Dubai: Taking a nap in a parked car or using a generator in a closed space might seem harmless — but it can turn deadly, warns Brigadier First Expert Khalid Al Sumaiti, Director of Dubai Police’s Specialised Forensic Evidence Department.

“Carbon monoxide (CO) is a colorless, odorless gas that can kill silently,” he told Gulf News. “We’ve witnessed tragic incidents where people died inside vehicles with the engine running or in rooms where fuel-powered generators were operating without ventilation.”

The danger intensifies in summer, when people leave car engines on to stay cool, or during power outages when construction sites run generators indoors. “Small leaks between parts of a car or an old, poorly maintained generator can release CO. Without proper air flow, the gas builds up and suffocates silently,” he added.

Carbon monoxide is produced when fuel doesn't burn completely. It can quickly fill enclosed areas, such as garages, closed rooms, or improperly ventilated vehicles. Victims often don’t realize what's happening — symptoms like dizziness and drowsiness hit fast, and unconsciousness follows.

Brigadier Al Sumaiti urged the public to take simple but life-saving steps: never sleep in a car with the engine on, regularly inspect your vehicle’s exhaust system, and never run generators indoors. “It’s called the silent killer for a reason — it offers no warning. Just one breath too many can be fatal,” he said.

He stressed the importance of public awareness and safety, especially as temperatures soar or when cold months drive people indoors. “Take precautions, and help spread awareness. These small actions save lives.”