After you eat food, the food goes into your stomach. Your stomach quite
acidic. The acid kills most bacteria and viruses (but not all, otherwise
your poop wouldn't stink and you would never get the bacterial or viral
infections that cause vomiting and diarrhea). In addition, the digestive
engymes digest flu and cold viruses, as well.

I am not saying you could never get flu or cold from eating food, but  it is
very rare.

Jeff

Guenter,
I doubt that hardly anyone gets a virus from food. Studies have been done
by medical experts which prove that a virus like the cold virus and flu
virus enters your body by means of the nose and in some cases the mouth.
In most cases the virus grows in the lungs or sinuses. If it grows in the
sinuses--it eventually enters the lungs and continues to grow. There is
one company named Zicam that sells a spray that is designed to kill the
cold and flu virus while it is still in the nose or sinuses. Once it
enters the lungs--Zicam won't help. I have read that Zicam may also damage
your ability to smell--at least in some people. I used Zicam and did NOT
loose my ability to smell.