When in doubt, wear a protective face mask
When they’re not feeling well, Japanese regularly don face masks in public, because it’s considered rude to spread germs. In fact, on Japan Airlines, masks are available on request. In business and first class, the JAL amenity kit includes a special moisture mask to help passengers breathe easier. With extremely low humidity levels onboard aircraft, travelers may often experience discomforting dryness in their nose and throat, especially during long-haul journeys. And, if you simply can’t get your head around the idea of wearing a mask, at least cover your nose and mouth with a tissue when you sneeze. In fact, avoid touching your eyes, nose, and mouth altogether: this is how most bacteria and viruses enter your system.