If your Body Odor smells like cheese or onion, stay away from those two things and see what happens. Cheese and onion are ingredients that go into dishes that we aren't even aware. The important thing is to pay close attention to how your body smells when you eat certain foods.
Also, look at old posts on here and you will get ideas of what has worked for others. Please remember that we all are different. Even though each one of us is struggling with Body Odor , each person might have a different body chemistry. Try some of the suggestions that have worked on people on the board. Keep the ones that help you and do away with those that don't.
Several people who have eliminated or reduced their body odor said it didn't happen over night. It took time. The key is to notice what helped reduce the body odor and be consistent with that. Don't give up.