Hi , form when onwards you feel the bass breath? Is it after or during bronchitis period.? If it is there before bronchitis then it must be due to your oral care. If it is during or after bronchitis then it may be due to the lungs problem. In that case you need to have mouth fresher regularly until your lung issues subsides completely. If it is due to oral care then you can get rid of by visiting a dentist and get the teeth cleaning done. Make sure you are not getting bronchitis recur. Stay safe. Take care. Cheers