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.
2. Know if you may have post-nasal drip. Post-nasal drip is when your body produces excess mucus, and the mucus runs down your throat instead of out your nose. Post-nasal drip can be caused by colds and allergies, certain medications (including medicines for hypertension), deviated septa, and fumes from irritants.