When a person doesn't like to touch foreign stuff (stuff that doesn't belong to him/her) or be touched by it. What is that called?

They are not exactly germophobes, because germophobes will touch things that are foreign so long as it is clean. The type of person I am talking about just don't like touching or be touched by other stuff but their own. They are perfectly fine with their own germ and stuff.

Here's some phobia's that might point you in the right direction:

Aphenphosmphobia- Fear of being touched.
Chiraptophobia- Fear of being touched.
Haphephobia or Haptephobia- Fear of being touched.
Misophobia or Mysophobia- Fear of being contaminated with dirt or germs.
Verminophobia- Fear of germs.

From: http://www.phobialist.com/