Well I used to have that exact problem when I was younger.
I was afraid that if anything was left next to an outlet the house would burn down.
But eventually it completely went away.
Now its like.
My mind telling me I want to do things I KNOW I dont want to.
I was watching a show and on it the story was that a woman was babysitting and while she was in another room the child was raped by someone.
I automatically pictured the little girl I babysit getting raped by someone and freaked out.
Im not actually worried that she will be or that this is going to happen,but because I had such a vivid image of it,it made me sick.and then my subconscious would have thoughts like "you want to see that.you're disgusting" and I so so dont want to think about it.And now its moved from that to anyone I care about.
So If im say watching a movie,and someone would kiss or something my head is going "Picture that as -someone that I wouldnt want to be thinking about-" and its driving me insane.
but now that Im in this mode of intrusive thoughts,it can be anything.Someone could say that Im depressed and I'll start having thoughts that Im depressed and that everything is horrible,even though Im generally very happy.