Hi there, welcome to the forum. Sorry this took a bit of time to answer and thank you for the question. This is normally an incidental finding. Meaning it doesn't cause any issues but surfaces in some other test or exam. You can either be born with this or acquire it. It's normally asymptomatic but if it does cause symptoms, it is things like chronic cough, dyspnea or chronic infections. That it is just there is not a concern. Later, if you develop symptoms, COPD will be something to investigate as these two things can eventually be linked. Normally it isn't treated and if it has to be in the rare situation, it's done surgically. Ask your doctor about this. You can not make it worse by coughing, coughing is a bodily function.