Hello, I would be happy to help you with your question.
Given the persistence of the cough
for two months and the fact that it was made worse (in terms of it becoming productive of a grayish mucous) by exposure to dust and smoke, it should not be ignored. You need a visit with your doctor to assess for bronchitis
, allergies, and asthma
I hope that this helps. If you have more questions, please click on "ASK ME A QUESTION" link above to directly ask me a question!