1 doctor weighed in:

Why is my saliva sample brown?

1 doctor weighed in
Dr. Victor Bonuel
Internal Medicine

In brief: It could be from

Effect of smoking or second hand smoke or pollutants on your bronchial tubes.
Take care!

In brief: It could be from

Effect of smoking or second hand smoke or pollutants on your bronchial tubes.
Take care!
Dr. Victor Bonuel
Dr. Victor Bonuel
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