A member asked:

Can pet hair and cigarette smoke cause sinus drainage?

A doctor has provided 1 answer

Sinus drainage: Pet hair is a strong allergen and can provoke significant sinus drainage and congestion. Cigarette smoke also can act as an allergen but has a direct irritative effect to the nasal mucosa and can cause drainage as well. Both of these can cause significant drainage.

Answered 9/28/2018

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