The degree of indoor decoration determines the amount of formaldehyde, and different concentrations of formaldehyde have different harm to human body, such as;
1, when the formaldehyde concentration is greater than 0.08 mg/m, it is easy to cause dizziness, chest tightness and poor breathing;
2. When the formaldehyde concentration is greater than 0. 1 mg/m, it will smell peculiar smell and make the throat uncomfortable;
3. When the concentration of formaldehyde is greater than 0.2 mg/m, it will seriously affect our health and even pose a fatal threat to the health of infants;
4. When the concentration of formaldehyde is greater than 0.3mg/m, our eyes will shed tears under the stimulation of formaldehyde;
5. When the formaldehyde concentration is greater than 0.6 mg/m, it may cause throat discomfort or pain. When the concentration is high, it can cause nausea and vomiting, cough and chest tightness, asthma and even pulmonary edema;
6. When formaldehyde reaches 30mg/m, it will kill people immediately.