Whether or not a charcoal fire will cause poisoning depends on whether or not there is a charcoal fire in the process of roasting, whether or not the charcoal is sufficiently burned, or whether or not the environment in which the charcoal fire is roasted is poorly ventilated. If the combustion is not sufficient, the carbon monoxide produced will gather in a relatively confined space, so the concentration of carbon monoxide cannot be dissipated well, and if the concentration of carbon monoxide in the room exceeds 0.04%, it will lead to carbon monoxide poisoning. In production and life, all carbon containing substances for combustion, if the combustion is not yet completely full, will produce carbon monoxide gas, usually in the steelmaking, coking, internal combustion engine exhaust gas. In the family, carbon monoxide is usually produced when burning charcoal, coal stoves, coal stoves and gas water heaters, or in the case of gas leakage, the above are the most common causes of carbon monoxide poisoning in life.