Acute formaldehyde poisoning usually occurs when an excessive amount of formaldehyde gas is inhaled at once: first of all, it is necessary to get out of the environment of the scene, then move to a ventilated and breathable environment, and oxygen can be given if available. You can add more fluids or use intravenous rehydration methods to speed up the metabolism of formaldehyde in the body, so as to be able to relieve the symptoms as soon as possible. If formaldehyde irritates the eyes and causes dry and painful eyes, you can apply lubricating eye drops, such as eye drops with R&R. If it leads to irritating cough, you can apply bronchodilators, such as fenagan cough syrup, Meprobamate or aminophylline. If the gas causes laryngeal edema or even pulmonary edema, which leads to dyspnea, anti-inflammatory treatment with glucocorticoids, usually dexamethasone or methylprednisolone, must be applied. If there are symptoms of allergic urticaria on the skin of the whole body, oral loratadine or intramuscular benadryl can be given.