Bad snot: As long as you are not coughing or having breathing problems we can safely assume given the time that its not lung related. The next is to look at your sinuses - this is the most common cause. I would see an ENT specialist.
Answered 6/10/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
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