Why am I still coughing a month after quitting smoking? I have a weird feeling in my lungs when I lay down , I can't breathe and have something on my chest .
24-year-old with history of smoking tobacco and cannabis • dyspnea • chest tightness | MDedge Family Medicine
![A comprehensive breath test that confirms recent use of inhaled cannabis within the impairment window | Scientific Reports A comprehensive breath test that confirms recent use of inhaled cannabis within the impairment window | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-021-02137-x/MediaObjects/41598_2021_2137_Fig1_HTML.png)