Oh no! That happened to me on a flight to Florida for a cruise. Sat next to a woman who coughed throughout the entire flight. Sure enough, a couple days later I was sick as a dog - ruined the last couple days of the cruise. I have almost developed a phobia about being in enclosed places with people. Even if they look healthy, you never know.
I hope you get well soon. It's awful being sick during the holidays.
I know what you mean - and being enclosed in an aluminum tube at 30,000 feet, with 400 people all breathing the same air makes me wonder about flying.