Formaldehyde can also cause coughing in children. High concentrations of formaldehyde can cause a pungent smell. Some children have allergies, such as bronchial asthma, allergic cough, cough variant asthma, or even allergic rhinitis, and respiratory diseases can cause airway sensitivity in children. The increased airway reactivity and the pungent smell of formaldehyde can cause airway spasm, which can lead to severe coughing, nasal congestion, runny nose, sneezing and other symptoms in children. For children with cough caused by formaldehyde, the first and foremost thing is to avoid it, if you can get away from places with high formaldehyde, try to avoid it as much as possible. Children can also wear masks to reduce the symptoms of coughing caused by formaldehyde.