Thanks for your question on Health Care Magic.
I can understand your concern.
In my opinion, you are not taking right treatment.
By your history and description, possibility of post infectious
bronchitis is more.
This condition is common after
common cold due to flu infection.
And treatment of choice is inhaled corticosteroid (ICS).
Ventorlin is short acting beta 2 agonist (SABA). It's action lasts for 1-2 hours. So frequent
dosing is required.
Montelukast is anti allergic and it has no role in post infectious bronchitis.
So better to
consult pulmonologist and get done PFT (Pulmonary Function Test).
PFT will tell you about severity of the disease and treatment of bronchitis is based on severity only.
Better to stop montelukast and start ICS after discussing with pulmonologist.
Hope I have solved your query.
Wish you good health. Thanks.