Formaldehyde is an irritating and toxic gas, and when patients are exposed to it for a long period of time, it will cause a series of uncomfortable conditions in the patient’s body. For the nasal cavity, the mucous membrane of the nasal cavity may become congested, swollen and inflamed, resulting in the patient experiencing non-stop runny nose, sneezing and nasal congestion. Sometimes the patient’s nose also has obvious pain, or accompanied by bleeding. In life, especially just after the renovation of the home, there will often be formaldehyde pungent odor, must actively adsorb formaldehyde or pay attention to the circulation of the air after the formaldehyde test standard, the patient can consider to move in, to avoid formaldehyde stimulation lead to a series of diseases, bring great distress to the life of the patient.