This is one of the most persistent myths about colds. The only way you get sick is when you come into contact with a virus. Cold air may irritate a condition you already have, like asthma, which could make your body more receptive to a cold virus. But you still need to come in contact with the virus.
Accordingly, can you get sick from being in the cold?
Myth: Cold air can make you sick. Despite being called the common "cold," lower temperatures alone won't make you sick. In fact, the exact opposite is true. "Cells that fight infection in body actually increase if you go out into the cold," says Rachel C. Vreeman, MD, co-author of Don't Swallow Your Gum!
Can you get the flu from being in the cold?
MYTH: You can catch the flu from going out in cold weather without a coat, with wet hair or by sitting near a drafty window. The only way to catch the flu is by being exposed to the influenza virus. So people often associate the flu with a cold, drafty environment. But, they are not related.
Why do you get a cold in winter?
The most likely explanation is that in summer people are more likely to be out and about. In winter we all get away from the cold weather into confined spaces with air heating system which recirculate the air from those who have the virus which causes the cold.