Hi all.. just wondering about how common vs. uncommon it is for a somewhat productive cough to be allergy-related (or for that matter pollution related, that is, if someone's ultra-sensitive to something)? Would be interested in anecdotes and antidotes. 
In particular, if chest (likely bronchial) coughs are allergy related and they *are* productive, what's a good approach to both eliminating the allergen and helping the body normalize?

In particular, if chest (likely bronchial) coughs are allergy related and they *are* productive, what's a good approach to both eliminating the allergen and helping the body normalize?