On Friday, at least 90 people were killed in a coal mine blast in northern China. While the cause of the gas explosion has not been revealed yet, media reports citing state media have said that the levels of carbon monoxide in the mine were found to have exceeded limits.
Previous Tragedy Highlights CO Danger
In December 2024, 12 people died from carbon monoxide poisoning in Gudauri, Georgia at an Indian restaurant where workers were staying. A generator running in a closed room to heat the building during a power outage caused the poisoning. The workers became nauseous and could not escape. Within hours, they were dead. Carbon monoxide poisoning claims several lives every year, and most people have no idea how fast it actually works or why it is so dangerous.
Your Blood Stops Carrying Oxygen
Here is what actually happens when you breathe carbon monoxide. According to Harvard Health, carbon monoxide passes from your lungs into your bloodstream where it attaches to the hemoglobin molecules that normally carry oxygen. Oxygen cannot travel on a hemoglobin molecule that already has carbon monoxide attached to it. As you keep breathing the gas, more and more of your hemoglobin gets taken over. Your blood gradually loses its ability to carry enough oxygen to meet your body's needs. Your entire system starts suffocating from the inside. Without enough oxygen, individual cells suffocate and die, especially in vital organs such as the brain and heart. Carbon monoxide also acts directly as a poison, interfering with cells internal chemical reactions. It is not just about oxygen deprivation; CO is actively poisoning you at the cellular level.
The Brain Gets Hit Hardest
Your brain is the most sensitive organ to carbon monoxide because it uses more oxygen than almost anything else in your body. When poisoning starts, you might get confused. You cannot think straight. Your personality changes. Then serious brain damage sets in. The CDC warns that the effects are caused not only by impaired oxygen delivery but also by disrupting oxygen utilization and respiration at the cellular level, particularly in high-oxygen demand organs like the heart and brain. Severe cases cause cerebral ischemia and hypoxia. Brain cells actually die, and sometimes that damage is permanent. People who survive severe poisoning often have neurological complications, including memory problems, difficulty concentrating, and personality changes.
Your Heart Starts Struggling
Your heart is working overtime trying to pump blood through a system that is being starved of oxygen. It can develop irregular rhythms. You might feel chest pain. In serious cases, the cardiac injury is so bad that it increases mortality risk for the next 10 years after poisoning. According to the CDC, cardiac injury during poisoning increases risk of mortality within 10 years following poisoning. People survive the initial poisoning but their hearts never fully recover.
Your Lungs Cannot Do Their Job
The CDC lists the most common symptoms of CO poisoning: headache, dizziness, weakness, nausea, vomiting, chest pain, and altered mental status. Difficulty breathing is often one of the first warnings your body gives. But by the time you notice you cannot breathe properly, it is usually too late to escape. The poisoning works fast. At high concentrations, death can come in minutes. Carbon monoxide is completely undetectable. You cannot see it, smell it, or taste it. It just silently accumulates in your blood while you feel increasingly confused and sick. Once it is in your system, it takes about a full day for your body to eliminate it.
