Carbon Copy (software) Carbon Copy was an early remote control and file transfer software for DOS and Windows published by Microcom. It allowed remote access to a computer via dial-up modem connection.
A viral infection (the common cold) is the most common cause of a stuffy and/or runny nose, but allergies, influenza, and sinus infections also may cause these symptoms. Less commonly, anatomical obstructions (e.g. a deviated nasal septum, foreign bodies) may lead to nasal congestion.
When your body produces more mucus than usual or itâs thicker than normal, it becomes more noticeable. The excess can come out of the nostrils -- thatâs a runny nose. When the mucus runs down the back of your nose to your throat, it's called postnasal drip. What Causes Postnasal Drip? The excess mucus that triggers it has many possible causes, including: Colds; Flu; Allergies, also called allergic postnasal drip