Police have confirmed that a Universitas Gadjah Mada (UGM) student and three family members died from carbon monoxide (CO) poisoning while camping at Taman Wisata Alam Posong, Temanggung, Central Java. Investigators determined the source of the lethal gas was a charcoal or briquette stove used inside a closed tent, which led to fatal oxygen deprivation.
How Carbon Monoxide Affects the Human Body
Carbon monoxide is an asphyxiant gas that aggressively competes with oxygen for space in the bloodstream. According to Prof. Agus Dwi Susanto, a lung specialist at RS Paru Persahabatan, the gas binds to hemoglobin—the protein in red blood cells that carries oxygen—300 times more effectively than oxygen itself. Because CO is colorless, odorless, and tasteless, victims often remain unaware of the exposure until it is too late.
Did You Know? Carbon monoxide poisoning is particularly dangerous because it does not trigger the body’s natural coughing reflex, which typically occurs when the airway is exposed to irritant gases.
The Progression of CO Toxicity
Medical experts categorize the severity of CO poisoning into five distinct phases based on the concentration of carboxyhemoglobin (HbCO) in the blood. Prof. Agus notes that the process is rapid and systematic, often beginning with mild symptoms that victims mistake for fatigue or general malaise.
- Phase 1 (5-10%): Mild headaches and subtle dizziness occur as the brain begins to experience early oxygen deprivation.
- Phase 2 (20-30%): Nausea and vomiting develop, often accompanied by rapid, labored breathing as the body attempts to compensate for low oxygen levels.
- Phase 3 (30-40%): Victims experience mental disorientation, confusion, and elevated heart rates before losing consciousness.
- Phase 4 (40-50%): This critical stage involves seizures and the onset of a deep coma, frequently paired with a sharp drop in blood pressure.
- Phase 5 (Above 60%): At this fatal level, the body suffers total organ failure due to the absence of oxygen, leading to immediate cardiac and respiratory arrest.
Expert Insight: The Danger of Sleeping in Enclosed Spaces
Expert Insight: The primary risk factor identified here is the “silent” nature of the poisoning. When victims are asleep, the early symptoms—such as drowsiness—are indistinguishable from natural fatigue. This allows the gas to reach lethal concentrations while the victim is incapacitated, effectively removing any opportunity for them to recognize the danger or exit the tent.

What May Happen Next
Following this incident, officials may increase public awareness campaigns regarding the dangers of using combustion-based heaters in enclosed camping environments. It is likely that camping site operators will face renewed pressure to enforce stricter safety guidelines for visitors. Furthermore, safety advocates may use this case to highlight the necessity of proper ventilation in temporary shelters to prevent similar tragedies in the future.
Frequently Asked Questions
Why is carbon monoxide more dangerous than other gases?
It is considered an asphyxiant that binds to hemoglobin 300 times more strongly than oxygen, effectively blocking the body’s ability to transport oxygen to vital organs.
Can you smell or taste carbon monoxide?
No, carbon monoxide is colorless, odorless, and tasteless, which makes it impossible to detect without specialized equipment.
At what stage of poisoning does a victim typically lose consciousness?
According to Prof. Agus, victims generally fall into a coma and lose consciousness when blood HbCO levels reach between 30 and 50 percent.
How can outdoor enthusiasts better ensure their safety when using heating equipment in enclosed environments?
