Thanks for your question on Healthcare Magic.
I can understand your concern.
Yes, both doctors are right.
Bronchitis may take several months for complete cure.
It may be lifelong if provoking agent (dust, pollution, chemical fumes) is exposed continuously.
So better to take drugs and inhalers given by pulmonologist regularly.
Avoid dust and pollution, wear face mask.
Do warm water gargles and steam inhalation 4-5 times a day.
Don't worry, you will be alright with all these.
Refrain from any form of
smoking.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.