Lentils is your ally against common cold, which cannot be cured by the influenza vaccine, M.D. Pediatrics Magdy Badran told MENA. Exposing feet to cold surfaces for more than 10 minutes doubles the chances of catching the common cold, Magdy said and warned against the overuse of antibiotics and painkillers that can have inverse effects advising lentils, onions, and garlic instead.