Is it normal that i am attracted to female feet and their scent?

I am sexually attracted to female feet. I live pretty much everything about them. Their toes, the curve of the arch, the softness, and the heel. But as of lately, I have learned to appreciate something even more about them. I had always preferred them clean... fresh out of the shower. The thought of a stinky foot practically repulsed me. But one day after work, my gf came home and wanted a foot rub... she had been running around all day in her heels, and her feet were sore. I of course obliged, and non sexually removed her heels one by one. I loved the sight of her feet in her pantyhose, always had. But as she wiggled her toes awaiting me to begin my massage, I caught a whiff of a pleasant smell emanating from her feet. She usually never wore pantyhose and heels, as she thought it was tacky, but she had to dress up because of execs coming in - so I had never smelt something like it before. It wasn’t like stinky bare feet after working out.. it was different. It wasn’t vinegary or “cheesy”... I still can’t describe it, but I was just a very delicate musk scent..
I began rubbing her toes and working over her feet one by one. She was in heaven, and so was I.... with each breath I inhaled more and more of her. It was intoxicating. I moved closer and closer, to see if it would get worse. The smell got stronger and even more intense, but in a good way. I was completely aroused by this point. She noticed that I was taking such great pleasure in the massage and that i was breathing so heavily, so she asked me what was going on.. I blushed and told her that her feet smelt great, and couldn’t get enough. At first she was embarrassed. She pulled away and smelled them herself. She asked if I wanted her to shower so they wouldn’t “stink”. I told her no; and explained what it was doing to me. She found it bizarre, but accepted it as part of my fetish.. I suppose it was the combination of her wearing pantyhose all day in heels. Her feet never really smell that bad, even when she tries (except barefoot in flats, but that’s just gross to me). She prides herself on hygiene, so she would never not wash her feet. Since then, she has tried to appease me by trying to make her feet “stink” like that again, but it’s never been the same.. So, question is for everyone, is it normal to have such a craving for that scent again?