Colds that do not smell are usually caused by allergic rhinitis and perinasal inflammation, and can be relieved by applying the following: First, a local nasal spray, such as ephedrine nasal drops, can quickly relieve the clinical symptoms of nasal obstruction. Secondly, going to a hospital specialist to perform nasal irrigation can also relieve the above clinical symptoms and performance. Third, you can also go to the emergency department of the hospital to perform ultrashort wave and microwave physiotherapy treatment, which can also play a local anti-inflammatory effect. Fourth, you can also eat anti-cold and anti-inflammatory drugs, anti-cold drugs recommended to take oseltamivir, anti-inflammatory drugs can be applied to levofloxacin, azithromycin, roxithromycin, penicillin or cephalosporin, etc., can relieve the above clinical symptoms.