The wardrobe in the room has been used for a year. The wet weather is particularly heavy and tastes a little sour. Is it formaldehyde?

I don't know. You can't judge whether there is formaldehyde by smell, mainly through testing, even the suggested testing box. Because sometimes, if you really smell a strong smell of formaldehyde, then formaldehyde really exceeds the standard. However, you haven't done anything with in addition to formaldehyde before, have you? There is no doubt that it contains formaldehyde. When it is wet, formaldehyde will be released quickly and pungent. Try to dry the wardrobe, and then spray Dialine, especially in hidden corners. Try to keep the room dry. Zhang, after this, you can use your mother's unique skill! Brain! Maru! hahaha. I wish you solve this problem ~