Cough Causes More Condition_symptoms Is There Some Kind Of Drug That Causes One To Cough Constantly?

Is there some kind of drug that causes one to cough constantly? - cough causes more condition_symptoms

My mother and I are trying to understand why my sister was coughing 24 / 7. You literally can not go one minutes without coughing.

We know that smoking marijuana a few times a day and has done cocaine, and perhaps others. Also, smoking cigarettes every day.

What are the causes of chronic cough?