Just a quick question.

First, how old are you?

Second, who has the fetish?

Normally you can't as that is one of the defining aspects of a fetish.

Would something possibly like therapy help.

You can't really get rid of it. You can learn to live with out it. Learn to move past it. But in reality it will always be there. Trust me I speak from experience.

First, how old are you?

Second, who has the fetish?

I second that.

People can often modify their behavior (even in extreme cases)... but again... helps to know more details about you...

The OP never answered the question of their age...

Maybe the fetish is an attraction to the smurfs.