There is no such thing as situational OCD. OCD, however, can be very specific, for example, your bathroom may be the main focus of your OCD, and other areas may not be as important. This is purely a result of your own obsessions about your bathroom versus the other rooms, even other bathrooms, in your home. If your only fear is related to the cleanliness of your bathroom, then that is all you will focus on. You may not even be concerned about any other bathroom in the house given that bathrooms you don’t use will have little effect on you because nothing in there can harm you; you have no interaction with those bathrooms. However, you may have obsessions about your own bathroom and will therefore perform the compulsive cleaning to deal with the obsessions.
It is possible that no other room in the house bothers you because the bathroom is the only place where you urinate and defecate. If you see these bodily functions as dirty and somehow contaminating your bathroom, then you may want to clean your bathroom a great deal to assure that there is nothing harmful there. There are individuals with OCD who are very focused on going to the bathroom, some go so far as to wear latex gloves when they defecate or urinate, and others wipe their anus for an hour or more to be sure that there are no feces left. Although these are extreme cases, bathrooms can be the source of a great deal of anxiety for people with OCD.
It is important that treatment for anyone with bathroom fears focuses specifically on those fears. Often, when working with a person with such fears, therapists conduct therapy in a bathroom to help that person with his or her fears. The therapist and the patient may touch all of the fixtures in the bathroom or hold sink or toilet handles. Whatever the fear is, it is important for the therapist and patient to work together to overcome any OCD fears.