Originally Posted by
flitcraft
The avoid-catching-a-cold thing won't work against colds, since they are caused by viruses not bacteria. Unfortunately, antibiotic ointment only works against bacteria. It might work against bacterially caused sinus infections, though.
Hand washing and sanitizing at the airport is important, though. Think of all those surfaces your hands come into contact with there. And he's dead right about tray tables. I swipe mine with a bit of paper towel loaded with my hand sanitizer, but I may look out for those disposable antiseptic wipes he uses.