Symptoms of Omicron include muscle aches and pains, body fatigue, fever, etc. Some patients may experience after-effects such as impairment of the sense of smell or taste. Omicron is a new mutated strain of the new coronavirus. Symptoms in patients include muscle aches and pains, weakness, fever, dry cough, chest tightness, nasal congestion, and runny nose. Some patients infected with Omicron may have no obvious symptoms, but they are also contagious and need to be taken seriously. At present, most patients with Omicron have no sequelae, but a small number of patients report a reduced sense of smell or taste, or even a loss of it. Some patients also experience generalized weakness, shortness of breath, pulmonary fibrosis, and other sequelae that may have an impact on quality of life and health. For those who are clearly infected with Omicron, they should actively cooperate with doctors for isolation treatment to prevent delaying the condition and inducing complications such as acute respiratory distress syndrome and coagulation disorders.