Like many others here, MKAC, I've felt and sometimes still feel this way. I've read your posts over time and it sounds as though you have a very good therapist and a solid connection. I would talk about your feelings about contamination with him. I'm guessing he's heard this before and will work to reassure you that he can and will take care of himself while supporting you through the process. I think getting through this feeling is a process rather than a single fix.