The nose usually stops running within 15 minutes after you come indoors. It requires no treatment beyond a handkerchief and has nothing to do with infection. It will be better a day or two after you stop using the nosedrops. The cold viruses are spread from one person to another by hand contact, coughing, and sneezing. Colds are not caused by cold air or drafts.
Many different viruses cause colds.
Most healthy teenagers get at least three colds a year. Expected Course Usually the fever lasts less than 3 days, and all nose and throat symptoms are gone in a week. A cough may last 2 to 3 weeks. Not much can be done to affect how long a cold lasts. However, we can relieve many of the symptoms.