Mosquito incense contains a large number of insecticides, but also contains other harmful chemical ingredients. In the process of burning, smoke in the room for a long time, the impact on the human body will be relatively large, it is easy to stimulate the human respiratory mucosa. There will be inflammation and congestion of the respiratory mucosa, but also coughing, coughing and other symptoms. If inhaled too much, will also damage to the human nervous system, and may induce cancer, should try to avoid using mosquito incense for a long time. If you need to use mosquito incense, you can first close the doors and windows, after lighting people can temporarily leave the room. Wait for a period of time after its burning, most of the mosquitoes will be killed, and then open the window for an hour, and then enter the room, so that almost no effect on the human body.