Is it normal to want to play with another females butt?

I know some might think it's gross but ever since I played with another female last summer for the first time since I was young, I've been dying to play with another woman's butt. I am so turned on by the odor and all. I mean I crave it, I don't mean poo I'm talking about the sweat, the all day odor it has and gets from sweating and pooing as long as the other girl wipes good. It smells so good mixed with pussy too. Whenever I'm visiting a friend now at her house I try and find some of there dirty panties to smell like in their bathrooms in a hamper or I sneak a pair or two into her bathroom to smell while I rub and cum. I've been real lucky so far of the three friends panties I smell the panties always have plenty of their butthole odor on them. I cum so hard that my pussy squirts. Does any other women have the same desire as I do? I like the way a guys ass smells too as long as it's not to funky. I like to smell and lick a mans sweaty balls and his dic, but another woman's takes preference, the smell is so much more erotic and naughty. I just love it so much!