1. Ethanol is commonly known as alcohol, and industrial alcohol mixed with methanol is a highly toxic substance. The case of alcoholism many years ago is a typical example. Many unscrupulous traders in the market blended industrial alcohol into various degrees of alcohol for sale, which seriously damaged the health of consumers. ? 2. Because ethanol is alcohol. No harmful substances will be produced after combustion. Safe, but not suitable for cooking in the kitchen, because it is much more expensive than gas. Suitable for car driving. ? The alcohol used as fuel in the kitchen must be industrial alcohol, and you must never drink it. And you don't have to worry about the harm caused by volatilization. Theoretically speaking, excesses are harmful. Drinking is the biggest example. But it is acceptable in the human body. On the other hand, it depends on what kind of wine you are burning. If it is so-called "solid alcohol", it will not volatilize, which can reduce the concentration of ethanol in the air, thus reducing the inhalation; If it is liquid alcohol, it may be volatilized by heat, but the amount is not much. However, if industrial alcohol is used, it will contain methanol, and eating by mistake or inhaling a small amount is toxic. But on the whole, as far as volatilization is concerned, if ventilation is maintained, there is no problem for long-term use, but remember that the key is the quality of alcohol.