By itself, a draft cannot cause an infection - it is caused by viruses . No virus, no disease. Drafts (even summer ones) are feared in many countries, because the peak of SARS occurs in the cold season. From this, a completely logical conclusion is drawn - cold leads to SARS. In fact, this is not the case, although, of course, there is a connection between cold and infections. So far, scientists do not know exactly how to properly explain this connection. The most popular assumptions look something like this: