Is it normal to be turned on by the smell of your own underwear?

I like to rewear the same underwear for days or weeks at a time or more not only to conserve money on laundry but because the more potent it smells, the more turned on I am. I tend to pee a little bit in my underwear, and the little bit of daily pee builds up. It also ferments and has an indescribable musk smell to it.

I also masturbate constantly and I wipe up with my underwear and let the semen ferment as well. The majority of the smell is the piss, even though I get a lot more semen on the underwear than anything else.

The smellier my underwear is, the more I want to masturbate. Sometimes it gets so bad and I masturbate constantly so I put on new underwear and my masturbating goes down.

I would really like to meet a transgender woman and be very comfortable with her and learn to love the smell of her piss and semen stained underwear as well.

Is this normal? What is it about my own piss that arouses me so much?