I got this advice through an e-mail. It is really good for those of you who have been exposed to the flu(any form) or any other cold or virus for that matter. I like it because they are all things you can do at HOME!
Dr. Vinay Goyal is an MBBS,DRM,DNB (Intensivist and Thyroid specialist)     having clinical experience of over 20 years. He has worked in institutions     like Hinduja Hospital , Bombay Hospital , Saifee Hospital , Tata Memorial     etc.. Presently, he is heading our Nuclear Medicine Department and Thyroid     clinic at Riddhivinayak Cardiac and Critical Centre, Malad (W).
         
   The following message given by him, I feel makes a lot of sense and is     important for all to know
         
   The only portals of entry are the nostrils and mouth/throat. In a     global epidemic of this nature, it's almost impossible to avoid coming into     contact with H1N1 in spite of all precautions. Contact with H1N1 is not so     much of a problem as proliferation is.
         
   While you are still healthy and not showing any symptoms of H1N1     infection, in order to prevent proliferation, aggravation of symptoms and     development of secondary infections, some very simple steps, not fully     highlighted in most official communications, can be practiced (instead of focusing     on how to stock N95 or Tamiflu):
         
    1. Frequent hand-washing (well highlighted in all official     communications).
         
    2. "Hands-off-the-face" approach. Resist all     temptations to touch any part of face (unless you want to eat, bathe or slap).   
         
    3. *Gargle twice a day with warm salt water (use Listerine if you     don't trust salt). *H1N1 takes 2-3 days after initial infection in the     throat/ nasal cavity to proliferate and show characteristic symptoms.     Simple gargling prevents proliferation. In a way, gargling with salt water     has the same effect on a healthy individual that Tamiflu has on an infected     one. Don't underestimate this simple, inexpensive and powerful preventative     method.
         
   4. Similar to 3 above, *clean your nostrils at least once every day     with warm salt water. *Not everybody may be good at Jala Neti or Sutra Neti     (very good Yoga asanas to clean nasal cavities), but *blowing the nose hard     once a day and swabbing both nostrils with cotton buds dipped in warm salt     water is very effective in bringing down viral population.*
We use a Neilmed...Love it!
         
 
   5. *Boost your natural immunity with foods that are rich in Vitamin C     (Amla and other citrus fruits). *If you have to supplement with Vitamin C     tablets, make sure that it also has Zinc to boost absorption.
                      
   6. *Drink as much of warm liquids (tea, coffee, etc) as you can.     *Drinking warm liquids has the same effect as gargling, but in the reverse     direction. They wash off proliferating viruses from the throat into the     stomach where they cannot survive, proliferate or do any harm.
Feel free to leave any handy tips you may have too!