Job, be sure to follow the scientific method, not the temerity to go down in the cellar. Many rural families have the habit of storing vegetables in the cellar, and placed in the cellar vegetables such as ginger, cabbage, potatoes, limited space will absorb oxygen and release carbon dioxide. If a long time did not enter the cellar, the temerity to go down, is likely to cause carbon dioxide poisoning. A long time in the cellar inside, the air is very thin, coupled with the presence of toxic gases of carbon dioxide, so that will be very dangerous. Next cellar, we must be prepared before the portable air respirator or tray with a rope tied to points on a candle, into the cellar, and see if I can burn. If the candle went out, the high concentration of carbon dioxide in the cellar, the normal burning cellar containing oxygen. When you go down, we must test whether the high concentration of carbon dioxide, if a high concentration of carbon dioxide should be ready to air breathing apparatus in advance, in order to prevent carbon dioxide poisoning go down when, so you can more effectively protect the security. So go down when, in order to be able to promptly and effectively to protect people's life and property safety, the most important to protect the health of the people, so in the case of the presence of dangerous gases, we must prevent the presence of harmful gases, in order to be able to prevent the harmful gases hazardous to our health, so in before to prepare good air respirator is critical, which bought a guarantee for our security. Jinan Cheung An electronic prompts you concerned about the health concerns Fire http://www.qitibaojing.net.cn