Staying in a room with a charcoal fire can be dangerous due to the emission of carbon monoxide (CO) and other harmful gases. Charcoal produces carbon monoxide when it burns, and if not properly ventilated, the gas can build up in the enclosed space and become life-threatening. Here are the primary reasons why it is dangerous:

1. Carbon Monoxide Poisoning: Carbon monoxide is a colorless, odorless, and tasteless gas that can be lethal in high concentrations. When inhaled, it binds to hemoglobin in the blood more readily than oxygen, leading to a reduction in the blood’s oxygen-carrying capacity. Prolonged exposure to carbon monoxide can cause symptoms like headache, dizziness, nausea, confusion, and in severe cases, it can lead to unconsciousness, permanent brain damage, and even death.
2. Oxygen Depletion: Burning charcoal consumes oxygen in the surrounding air to sustain the combustion process. If the room is not adequately ventilated, the oxygen levels can drop significantly, leading to a lack of oxygen for people in the room. Oxygen depletion can cause difficulty breathing, especially in closed spaces.
3. Fire Hazards: Keeping an open flame like a charcoal fire indoors poses a fire hazard, especially if there are flammable materials nearby. It increases the risk of accidental fires and can quickly escalate into a dangerous situation.
4. Indoor Air Pollution: The smoke and fumes produced by burning charcoal can also contain other harmful substances like particulate matter, volatile organic compounds (VOCs), and various toxic gases. Breathing in these pollutants can irritate the respiratory system, trigger asthma attacks, and worsen existing respiratory conditions.
5. Suffocation: If there is inadequate ventilation and oxygen levels drop significantly, people in the room may experience suffocation or asphyxiation due to the lack of breathable air.

To stay safe, it’s essential to use charcoal fires only in well-ventilated areas, preferably outdoors or in properly designed stoves or grills. If you suspect carbon monoxide exposure or oxygen depletion in an enclosed space, leave the area immediately and seek fresh air. Installing carbon monoxide detectors can also provide an early warning of potentially dangerous levels of CO in the air. Always prioritize safety when using any open flame or heating source indoors.