Am I the asshole?

Literally I cannot handle the disrespect. My mom is sick and I have opened up my home to her and my little brother. I cook and clean and do everything for them. Take my brother to school, pick him up from practice, take him to his girlfriends house and pick him up. Sometimes on a weekday I’ll pick him up at 11 pm. I do all this because I want him to still have a normal life despite my mom being sick. The only think I ever ask is that my mom and brother be clean at my Apartment. My brother won’t clean up after himself. I’ve told him multiple times to dry his feet after the shower and when he comes out the floor is soaked! His feet constantly smell. I go in my room and my room smells like feet! There’s clothes everywhere and face hair all over my sink. He leaves food out , the other morning I woke up to a plate of chicken from the night before on my table! it’s just enough already and I’m sick of it! I’ve politely mentioned it to my brother plenty of times and he still does it! I brought it up to my mom and she says “he ain’t no girl he doesn’t have to clean!” Tonight I finallly had enough because yet again his smelly ass frito feet were on my couch! I said something g and my mom popped off! I said “why is it such a big deal I want me stuff clean” and I completely got attacked.my mom mentioned how I wasn’t clean at his age, etc, completely insulted me. He is 16 years old why the fuck is it a crime that I think he needs to be clean!!!! My mom took all her stuff and left. I fell awful she’s sick and now she’s mad at me. I just don’t want my shit dirty why is that so hard to accept and respect?! Fuck!