Wife came home from work sick... She's in the bed now all curled up, coughing all over the place. I work from home (in IT).

I had to go buy her soup and I got myself a big bottle of 500mg Vitamin C. She has 240 hours of sick time built up, and literally hasn't called off once in the past 2-3 years, so i KNOW she is sick.

I've been training like a champ, so my immune system is probably lowered.

What can I do to lower the chance I will catch this -- other than sleeping on the couch, our leather couch is terrible, and our son is 6, so needless to say it's got springs popping up in places that make it unsleepable.