For over a year now, I have had to fly frequently to and from Italy. I chose to do so via a low cost carrier. Ever since, every time I have flown, I have a persistent cough and sore throat. The first time it developed into an infection, other times it's the aforementioned problems, sometimes combined with a flu-like feeling. No fever though, only respiratory problems. My sister warns me that it could be the result from flying low cost as supposedly to save costs the same air is recycled throughout the flight. Has anybody heard or experienced similar complaints? What is to be done? (I'm already taking every possible medecine, enchinacea and honey included.)