Body odor wasn't my issue, but it may surprise you that we are all harboring yeast which give off their waste. A cause for many health issues is the yeast living in our intestines. I developed multiple forms of eczema in middle age, yeast was never diagonosed by my oncologist or other doctors. Still I was suffering so I kept reading about ways to improve my health. I wanted a cure and not a treatment.
I came upon the book, The Yeast Connection Handbook by William Crook, Md. He wrote this book decades ago. It's a simple, fast read for the layperson in which he explains what this yeast waste is doing to our bodies and is causing various health issues and diseases.
Your body is clearly out of balance, the book can be bought second hand and is inexpensive on the internet.
Following his detox is challenging, but I did it and today 5 years later still avoid his #1 culprit, processed sugar. It's all explained in his book.