Formaldehyde is a colorless irritating gas with strong smell, and its 35%~40% aqueous solution is commonly known as formalin. Formaldehyde is a poison of protoplasm, which can combine with protein. After inhaling high concentration formaldehyde, severe irritation and edema of respiratory tract, stinging eyes, headache and bronchial asthma may occur. Direct contact with formaldehyde can cause dermatitis, pigmentation and necrosis. Regular inhalation of a small amount of formaldehyde can cause chronic poisoning, such as mucosal congestion, skin irritation, allergic dermatitis, keratinization and brittleness, nail bed pain and so on. Long-term inhalation by pregnant women may lead to malformation and even death of newborn babies. Long-term inhalation by men may lead to sperm malformation, death and male sexual dysfunction, and may lead to leukemia, pneumothorax and reproductive insufficiency. Systemic symptoms include headache, fatigue, poor appetite, palpitation, insomnia, weight loss and autonomic nerve. All kinds of man-made boards (particleboard, density board, fiberboard, plywood, etc. ) may contain formaldehyde because of the use of urea-formaldehyde resin glue. Adhesives should be used in the production of new furniture and the decoration and laying of walls and floors. Where adhesives are used in large quantities, formaldehyde will always be released.

Generally, formaldehyde in newly renovated houses will exceed the standard. As long as one or two pots of chlorophytum are put in the new house, formaldehyde will be partially absorbed. However, because the volatilization time of formaldehyde is as long as 3- 15 years, it is impossible to remove formaldehyde only by relying on plants. The best way is ventilation to reduce the indoor formaldehyde concentration below the safety limit. It is best to find a professional management company to deal with it.