Germs travel within close proximity on a plane but planes are small spaces which means that germs can travel down the aircraft quite easily. Also, another way to avoid getting sick onboard

is to always keep your air vent on, even if it does get cold. Dr. Mark Gendreau — the medical director and vice chair of emergency medicine at Lahey Medical Center-Peabody, and an expert on

the spread of infectious diseases previously told Travel + Leisure: "The flow pattern of air on an aircraft doesn’t necessarily work front to back, or back to front - it’s actually

compartmentalised into various sections on the aircraft. "As a rule of thumb, the air that you’re typically breathing and exposed to is usually anywhere from two to five rows