I will say that exposure has done a great deal of good in getting people to accept snakes. People come over to my house and will usually come over multiple times before they notice the tank set up in my tank room with the fish. Over a period of time, after the initial freak out that there is a SNAKE!, they start watching him through the glass, watching me hold him, feed him, clean his tank out, etc, and eventually ask to touch him, or even hold him. It's a gratifying experience, actually. I have found that as long as you let people take it at their own speed, they eventually come to deal with -- if not admire -- reptiles.