In december i had a spontaneous pneumothorax. i know i shouldn't, but if i were to smoke a cigarette or weed, what would happen to my lung? thank you

Pneumo: Once this occurred - u have 20-60% chance of having it again for no reason at all. Some exacerbating risk- factors may be strenuous exercise, chest trauma, poorly controlled lung dzz, chronic smoking etc. However, having an occasional cigarette and/weed- while not the best way to spend ur health- should not increase ur risk more than original statement. Good luck