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.
How to Stop Post Nasal Drip: Symptoms & Treatment. By Dr. Harold Katz - Bad Breath Expert. Post-nasal drip is a relatively common symptom of colds, respiratory flu, sinusitis, rhinitis, infections, and acid reflux. Birth control pills, allergens, pollen, dust, and smoke can stimulate post-nasal drip.