Early signs can include a fever, cough, headache and shortness of breath.

早期症状包括发烧、咳嗽、头痛和气短。

What you might notice again, even if the air seems OK, our symptoms like eye, nose or throat irritation, wheezing, coughing, headaches, fatigue, dizziness.

你可能会再次注意到，即使空气看起来很好，但我们还会出现一些症状，如眼睛发炎、鼻炎或咽炎，还会出现气喘、咳嗽、头痛、疲劳、头晕的症状。