Probably not....: Blood-tinged sputum is typically caused by bronchitis, which is an infection in the lung airways. You could also have post-nasal drip and the blood is from the nose or sinuses. You need to quit smoking ASAP as this is contributing to inflammation in the airways which predisposes you to acute bronchitis. See your doctor for diagnosis/treatment and to help you quit smoking!
Answered 12/26/2014
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