I, smell my butt is it normal

Hi, Is it normal to smell my butt? I have been doing that since I was small, 9 years old. Yeah, my maid made me smell my sister's butt. Because of that, I think that I was meant to smell butt. Therefore, this is who I am now. I like to smell butt. As a result, I learn to masturbate before reaching puberty (When Im small). Every time when I want to smell my butt, I'll musterbate as well as keep thinking that I am in a girls panties and smell her butt for the whole day.(Imagine,she pass motion or fart), Sometimes, Also, I was thinking that i am in a diapers until the baby shit or even the girls made me small and put inside her panties or stick my face to her butt and fart etc etc etc... . haizzz....
And right now, One of my precious friend rejected me because, I did not realize that I was doing it in the exam hall.I scrath my pants (the private parts) and I smell it. Because of that, I am very angry of myself, I hate who I am, I hate myself very much. Haizzzzz......