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's not unusual for parents and even doctors to confuse cold and seasonal allergy symptoms, Rachid told Live Science. Young children frequently get colds, and their parents may not always think of seasonal allergies as the reason for kids' constantly drippy noses.