Can I smoke after minor lung collapse?

Ill advised. Risk factors for primary and secondary spontaneous pneumothorax include: smoking (including marijuana). Lung inflammation is also hypothesized to be important. Smokers have increased numbers of inflammatory cells. Studies in patients show degree of inflammation correlates with the extent of emphysematouslike changes (elcs).
Smoke. Yes you can smoke. However, its safer for you not to smoke. If your lung collapsed on its own then smoking was a major factor.