Phenol is a commonly used disinfectant and preservative in hospitals. In the air, it is oxidized into pink benzoquinone, which is volatile and has an average decay period of five days. Therefore, phenol exposed to the natural environment will continuously degrade. Low concentration phenol does not cause harm to the human body, and its short-term presence in the air will not have an impact on the human body. However, prolonged inhalation of high concentration phenol gas can cause headaches, dizziness, fatigue, blurred vision, pulmonary edema, and other symptoms, so try to avoid staying near high concentration areas as much as possible.