Be very careful when you have a constant chronic cough. I coughed so much that I actually broke one of my ribs in 2009. AND this is with a bone density of two standard deviations higher than the top level for a woman at the age of 25, and I am 48. I wasn't coughing violently which can cause a break in a rib, it was the constant coughing that weakened the rib apparently. So even though you may have a high bone density you can still break a rib from constant coughing. Also, you must remember not to take any codeine as it works as a cough suppressant, and when you have asthma, you need to cough up the phlegm, otherwise you risk getting pneumonia.
You need to cough when you have asthma so you don't get pneumonia
But if you do cough to avoid pneumonia, you risk breaking a rib.
Spin your head around a few times and pray a bit, you need to get those horrible things out of your life!
Oh that spinning head comment is for the other thread, about headaches - I think. Anyway, I hope you get what I am saying. Sometimes you are dammed if you do and dammed if you don't ... so do whatever you think is best