Question
The son slept in a room with a slightly open window for 2 hours. Although there was ventilation afterward, he still experienced headaches, tears, and eye pain, which lasted for about 40 minutes. The symptoms disappeared after a walk, and milk was provided. Worrying whether harmful substances like formaldehyde have entered the body, how should it be treated?
Answer
Based on your description, the measures you have taken are correct. The release period of formaldehyde can last up to 3-15 years, and formaldehyde will continue to be released from furniture and building materials, especially in summer or when using heaters, where the release amount of formaldehyde can increase to 2-3 times the normal level, leading to long-term indoor air pollution exceeding the standard. The fundamental solution to formaldehyde pollution is to eliminate the source of formaldehyde release.