any other gravity bong smokers cough up black phlegm? also vape and smoke tobacco but this is pretty common for me. had an x ray said my lungs are fine and oxygen Smoker's cough: Symptoms, causes, and home remedies Coughing After Quitting Smoking: Why It Happens and What You Can Do Why Do Vapes Make Me Cough? 5 Fixes That Work Cannabis Airway Irritation: 5 Science Backed Insights Smoking and Vaping: How They Damage Your Lungs Over Time Max Hospital