how to not catch a cold

A classmate in library school shared this one with me. She used to work at the reference desk at the freezing cold university. At the desk, as with so many customer service professions, many of the patrons coming to ask for help were sick. The secret to not getting sick yourself is to dab a bit of Vaseline and swirl it around your nostrils in the mornings. She said one of the reasons people get sick is because their nasal passages get too dry. The Vaseline helps prevent that. She said that since she's started with the Vaseline, she never gets sick. And there was one time she forgot and she got sick.