Common cold

Common cold is a common disease of Earth. Colds are caused by viruses, affecting the upper respiratory tract. Common symptoms of the common cold are stuffy nose, sneezing, coughing and fatigue. The cold is spread through the air when you sneeze.

In 1997 placed Apophis two hollow false teeth in Rya'c which contained two types of viruses. He was going to use for Rya'c to obliterate Tau'ri with the virus. Drey'auc told Teal'c to Rya'c had lost two teeth in training with Bra'tac. Fraiser examined teeth and discovered they had something in them. After Doctor Janet Fraiser had discovered the virus in the teeth and destroyed them, she told it to General George S. Hammond and SG-1 if it. And Samantha Carter and Fraiser told about the virus had met each other, they would let loose a dangerous virus which would kill all life on Earth in a few weeks. Colonel Jack O'Neill thought it sounded like anthrax. According to Doctor Janet Fraiser would anthrax be like a cold in comparison with the virus.