戒烟。 避开污染物。 让自己咳嗽。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
. Prevention is always better than treatment, so don’t expose your lungs to extra stress, particles, carcinogens, and smoke. Stop smoking, as it’s debilitating to your lungs and puts harmful chemicals such as nicotine into your body. Smoking also causes tar to coat your lungs, which is extremely harmful to your lung health.  Nicotine withdrawal can be quite severe if you quit smoking. Common symptoms include mood problems, dizziness, weight gain, anxiety, depression, increased coughing and insom