Fecal body odour? Fecal bad breathe ?

Hi everyone , the past few months have been a living nightmare for me this problem has gotten so bad for me that my family even makes fun of me about it . I’ve been noticing over the past few months when it first started happening , one of my cousins was the first to say it “what smells like shit in here” I didn’t know it was me at the time so I shrugged it off. Thinking there was not a problem because I’ve never smelled in my life ! I end up visiting one of my closer friends and we were in the car he kept saying it smelt like garbage or “sewer” he kept the windows rolled down I didn’t think it was me at the time ! I just thought it was coming from the outside so I brushed that off . The most embarrassing day of my LIFE this is when I realized the full magnitude of the problem: I went to a rave with my uncle ! I’ve grown up with him for most of my life so I thought everything would be cool !!? Well guess what it wasn’t people started to smell me everyone we were once near would move away my uncle even left me a couple of times by myself because he was embarrassed. Now for christmas my family thought it was a big joke to get me toilet paper as if I don’t wash my ass with soap or after shitting ! The worst part is when I confront any of my family members about the situation they tell me nothings wrong when I can hear them asking what smells in the background. My uncle even went as far as to tell everyone I know how I smell him and his friends talk about it on Twitter Subliminally messing with me . It sucks can anyone help me please I’m tired of feelinb like this I can’t talk to anyone NOT even my family and this hurts I feel like committing suicide I just want to live life normal again but I can’t do this if this smell is around me all the time