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.
Casein, the naturally occurring protein in dairy products, can promote the formation of mucus. It can also make existing mucus thicker in your nose and sinuses, leaving you completely congested. It may also cause a runny nose or the ever annoying post nasal drip.