Sensitization: Direct contact with formaldehyde can cause allergic dermatitis, pigmentation and necrosis, and inhalation of high concentration formaldehyde can induce bronchial asthma.
Irritation: The main harm of formaldehyde is the irritation to skin and mucous membrane. Formaldehyde is a toxic substance in protoplasm, which can combine with protein. When inhaled in high concentration, it will cause serious respiratory irritation, edema, eye irritation and headache.
Mutagenicity: High concentration of formaldehyde is still a genotoxic substance. Experimental animals can cause nasopharyngeal tumors under the condition of high concentration inhalation in laboratory.
Now formaldehyde mainly exists in furniture and various glues, such as paint, but there is no formaldehyde. Of course, the premise is to buy water-based coatings, such as morning light latex paint, which is one of the water-based latex paints. Glue is bound to be used when furniture is bonded. Inferior latex contained in inferior mattresses, basement membrane and glue used for wallpaper wall covering, etc. They all contain some formaldehyde more or less. Therefore, don't move in immediately after renovation. First put some green plants in to absorb some formaldehyde, then use activated carbon to absorb formaldehyde, and you can also put some grapefruit peel to increase the air freshness.