Starting tomorrow morning, I think I should start taking echineacea before I leave for my trip. This is the first time I've been on a plane since 1994 and I almost ALWAYS catch a cold when I travel by plane. I believe it's the recycled air we have to breathe, combined with so many people in one confined space. I used to be sick all the time travelling on the Go train and I had a cold after my 8-hour bus ride home from Binghamton 2 years ago. DOes anyone else experience this?