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When they are narrowed or damaged, blood flow becomes slower and less efficient

They can be used in specialized air purifiers to help improve the air quality in a building where smoking is allowed

As a result, you may develop symptoms that include the following: Discolored drainage from your nose or the back of your throat Nasal congestion or obstruction Facial pain or tenderness Reduced sense of smell or taste What are the causes of and risk factors for sinusitis

When you consider the years spent smoking and the typical number of cigarettes smoked daily, the numbers quickly add up

Blood vessel constriction is brought on by nicotine and other substances in cigarettes