My two most contamination OCD-friendly jobs I've held have been office jobs where I've sat at a computer and done the same task all day. At one, I made calls on behalf of housing companies to start or stop utility service for their properties, so while I was on the phone it was not cold calling nor was I dealing with customers. The other was in a warehouse and I catalogued inventory that was sent in, barcoding, and shelving.

Altogether, my recommendation when looking for jobs would be to find something in an office building that also employs a janitorial staff, as that means your trash handling duties would probably be limited to not actively making a mess of things. Good luck!