Open all your windows and air the house out. Just dress warmly and turn the heat up when you do this.
Wash all sheets and blankets (all at once) in hot water and dry in hot dryer . . . also your daytime and nighttime clothing.
Air the pillows out by placing them on open windowsills and then throw them in the dryer and run the dryer at high heat
Run all stuffed animals through the dryer at high heat after placing them on the windowsills.
Wash your hands frequently.
If you are coughing or have a stuffy nose, steam up the bathroom and sit there breathing in the steam, or boil water and breath in the steam (at a distance, of course).
(Other suggestions gratefully accepted - please record on messages below.)
All this should be done in one day so there cannot be carry over of germs from one day to the next.