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.
It can be caused by allergies (hay fever) or a viral infection, such as the common cold. Some people develop postnasal drip without having allergies or an infection. This is called vasomotor rhinitis. People with sinus infections produce a lot mucus inside the sinus. This mucus can drip down and collect in the throat. Normally, we are constantly swallowing saliva and small amounts of mucus. If you have a swallowing disorder, saliva and mucus will stay in the mouth and throat rather than moving down into the esophagus. Acid reflux up to the throat can stimulate mucus production.