It's a long story for me being as degenerate as I am, there's a TL;DR at the end.
I remember that I had a frienemy relationship with my older female cousin(1 year older than me) when growing up because she was too spoiled, bossy, and too close to my older brother. Turns out that when I was 9-10 years old, I couldn't see her for 2 years because she lived on the countryside. That's when it happened, one year passed and I didn't get a chance to see her(despite hating her more than loving), I felt weird. One day I just woke up and missed her bossy attitude, the spoiled brat she was, making fun of me at every chance she had, her beauty, damn I felt like I needed her in my life. That's probably when I subconsiousnly understood that I really enjoyed pretty girls being bad to me.
HOWEVER, there's a crucial piece of information to the story that not only compliments the first paragraph, but also completes what I like to call my "FETISH TRINITY". When I was little (talking about 4 to 6 years old), in the morning I would be taken to my grandma's house so she could take me to school later. My grandma used to sniff my feet when I woke up, I never gave a damn because it made tickles, but I was curious about why she did that. Didn't take too long until I developed interest in feet, I didn't know why but I payed more attention to girls with pretty feet, then eventually feet with bad smell (from sweat or whatever, not poop tho, scat fetish never caught me thx god).
When I was 11, it was when my female younger cousin (also 3 years younger than me), definitely triggered my fetishes forever. She had a foot odor problem (still has, has to take pills to control the odor), her feet stinked so bad in summer, one day I took her to the closet with me and I sniffed her feet like crazy, she didn't care at all, but for me it was like something has awakened in me. Then one day, she visited me and I was playing Jak The Precursor Legacy on my PS2, I turned my PS2 off to play with her, turns out she had other intentions. My cousin grabbed my DS and turned off the lights, she went to my bed and was holding my DS by the end of the bed, she said "I will drop it to the ground if you don't kiss me", I was like "wtf are you crazy? that's nasty, I've never kissed, and you are too young", she said "do it or else...", I said "no", she dropped my DS with great strenght to the ground and I was like " No, no, I just bought it! Ok... I will kiss you". We kissed two times that night, I felt like shit at first and hated, but on the same night I fantasized about her forcing me to kiss me her again, to make her feel good. For the following days she would take advantage of me saying if I didn't do something she would kiss me. For me that was the end of it, I wanted more, I wanted more girls to be mean to me, I wanted them to punish me with their stink feet. So yeah the "FETISH TRINITY" is composed by femdom, feet, and bad odor.
TL;DR: Developed femdom taste because both female cousins were bad and took advantage of me, also developing feet and bad odor fetish's because of grandma's weird habit and my cousin's foot odor problem.