My BO has changed?

This makes perfect sense. Your body has different inputs than it used to (vegetarian food instead of meats), and so the digestive process deals with them differently, and the outputs are different as well. You changed your entire digestive process.

As for why it is different from high school – you grew up. Your body matured. Now it is treating food as an adult. Your internal systems hadn’t fully matured when you were a teen.

My BO changes every time I eat onions or garlic.

When I was in Germany I started partying with a woman from Ireland. She said American accents are horrible and I fought her claiming I don’t have a accent.. I said she is the one with one. Didn’t have sex that night.

My point is to not really worry about what is considered a “normal body odor”. Since there isn’t one.

I have been a vegetarian for 30 years. I was a full grown adult of 25 years of age when I became a vegetarian. My body odor did not change (at least not to my nose) when I stopped eating meat. But that’s just me.

It’s possible that what you are eating, and not eating, have changed your scent. It’s also possible that hormonal fluctuations have changed your scent.

Because you are now an adult, and have changed your diet, and because you have noticed a decided change in your scent, it would be a good time to get a baseline thourough checkup with your doctor (if you don’t have one, now is the time to choose one and start a relationship and an ongoing dialogue with that doctor) and let them know of your concerns.

Make sure you tell them about any and all medications, OTC meds, vitamins, and any supplements, or herbal remedies you take. Any one of them, or combination, could have an effect.