Shaking hands is part of normal business etiquette when discussing a deal or being interviewed for a job. If you were being interviewed for a job, @
Tsugunai, you probably made the worst possible first impression with what would be perceived as very rude behavior. Despite how commonplace they may be, handshakes are an expression of mutual respect and trust. Do you come from a culture in which handshakes are uncommon or unusual? If so, I sympathize with you, but you should attempt to get used to them if you want to further your career.
Hands are washable. Most diseases spread by skin-to-skin contact must be manually transferred to mucous membranes on the face (eyes, mouth, nose, etc.) to cause infection. When you're leaving an interview or closing a business deal, smile, shake hands, and then proceed to the bathroom and wash with soap and water. Problem solved. Have a recent cut on your hand? Politely explain that your hand is injured, and that you do not wish to spread
yourgerms to the other person in question.
As an aside, do you ever eat in restaurants? Most chefs -- and fast food employees -- don't wear gloves in the kitchen. They are required to wash their hands regularly, but they touch your food ... very frequently ... with their bare hands.