If you usually smoke a lot and smoke for a long time, a period of time after quitting smoking may cause symptoms similar to the flu, such as nasal congestion, runny nose and other symptoms, and may also cause nausea, vomiting, and also cause general tiredness and weakness, depression, irritability, etc., which is usually not very serious and will get better after a period of time. At this time, you should exercise moderately and also pay attention to your diet. If no attention is paid, it can also cause a cold, which can easily cause or aggravate the symptoms of rhinitis, and also cause chills, fever, sore throat, which needs to be treated actively with anti-cold medication. If it occurs repeatedly and does not improve, you need to go to the hospital for examination, it may also be due to nasal polyps, or nasal congestion caused by chronic rhinitis or nasal tumors.