Help, can't take this.

Hello,

Let me give a little info about my situation. I was always odor free until 17 which was my junior year in high school, I'm a junior in college now. I started to smell during my junior year and I don't know why. I've gotten really depressed and lost all my friends and have now become a hermit. I smell so bad that people make comments around me saying something smells like shit or what is that smell. I've been living with this for about 4 years now and it has gotten me severely depressed. I know I don't have TMAU. I don't have a Body Odor , it's just a severe case of bad breath, like through the air I breath with my nostrils and mouth. I've tried tons of product and I know it doesn't work. I'm starting to believe there is something wrong with my digestive system. The smell changes according to what I eat. It could smell like smoke, shit, etc. I just want to know if anyone has a similar problem to me or if they gotten cured. I'm scared to live the rest of my life like this. I DON'T want to live the rest of my life like this. I'd rather die than continue like this. I've watched all the good times of my life pass me by because of this stupid illness. I was fine with my life before this ever came around, sigh. Can someone help me?