Is it normal to want to fart in my sisters face? (and her to do the same?)

I remember my older girl cousin would play baseball and me and my other 2 girl cousins were in her room talking and she just finished playing baseball, and she put her butt in my other cousins face and farted in her face and they said eww, and she put her butt in my face and pulled her baseball pants down and she pulled her pantie down and she put her naked butt in my face and it smelled like ass I guess when she would play baseball her butt would get sweaty and stinky, so then my other 2 girl cousins said she was nasty and then she grabbed both of her buttcheeks and spread them wide open and she showed me and my other 2 girl cousins her butthole, and then she put her butthole on my nose and it smelled bad but I loved it and then I put dick in her butt and my other cousins couldn't believe it and I fucked her sweaty smelly butt and she loved it and I cummed and my other 2 girl cousins were horny and they were rubbing their pussies and then I put my fingers in both of their asses and smelled my fingers and the same thing happened my fingers stank and I then knew that all 3 of my girl cousins' asses all stinks and I couldn't believe their butts stink because they were girls