How long does a contamination feeling can last..

[helloocd]

... once on started to expose yourself to the thing that feel contaminated by tought?

An event in my life made me expose myself to a LOT of obsessions since yesterday. I watched a movie that was one of the worst obsession that I had to face and surprisingly, it was much less difficult that I tought. I even put an image of the movie as a wallpaper on my computer to  willingly contaminate everything I'll do on the internet. So, my question is, if I expose myself to this daily, how long can it take so that my brain stop to associate this movie to my obsessive tought?

[PolarBear]

That depends how quickly you stop your compulsions. The E in ERP does stand for exposure but that us only half of it. RP is for response prevention and that means not doing compulsions.