Use controller drugs
If by chronic cough
you mean asthma
then respiratory specialists want you to use bronchodilators (bd) as little as needed.
Not because they're dangerous (they're not) but because their frequent use means that asthma isn't controlled. When bd use exceeds 2x/week it's time to add an inhaled corticosteroid or leukotriene receptor antagonist. You'll be amazed how bd use decreases on these medications.