Source: http://bolthely.hu/drtihanyi/oldal/egyeni&id=4a4a78362b0f5_Meregtelenites

Who hasn't had herpes on the lips a few hours after a hearty meal or the next day?

The reason was not the unwashed plate or cutlery, but the relative lack of bile acid caused by too much food. Bile acids are able to break down certain viruses, especially those with lipoprotein envelopes (yellow fever viruses, herpes viruses etc., while viruses without envelopes are resistant: coxsackie, polio, etc.). And herpes virus is in everyone.
But bile acids can do more. They can also break down endotoxins produced by mainly Gram-negative bacteria into small fragments.