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.
(Mucus can also form in the lungs, which is the case in patients with asthma and chronic bronchitis. When that happens nerves in the bronchi are stimulated, resulting in cough.). Mucus dripping from the nose or sinuses is called post nasal drip (PND). PND is the most common cause of chronic cough. If mucus stayed in the nasal passages and sinuses -- if it did not drip into the back of the throat and down toward the lungs -- then rhinitis and sinusitis would be an uncommon cause of cough.