What is the first appearance of formaldehyde poisoning in infants?

The phenomenon of formaldehyde poisoning in infants includes nausea, vomiting, sneezing, skin allergy, rash, skin itching, crying, choking, choking, loss of appetite, etc. Parents should closely observe the dynamic changes of their children, promote indoor ventilation, and place more activated carbon indoors to promote formaldehyde disappearance.