Talk therapy doesn't work for OCD. Behavioral therapy does. The therapist needs to go with you for your session, to triggering situations, which includes things you fear, like germs. You need to stay in the situation with the support of the therapist who cannot talk like convince you it is safe (contraproductive), but can tell you things like they know it is hard but you can do it.

For every situation you win control over, your life will be bigger and less stressful. Talk therapy even if it is CBT is just bs, and does not help OCD. Therapists rather do CBT because then they can sit on their backs, their favorite pastime.