Indians, sadly , do have BO. Any reason why?

I was in south korea recently, and sadly, after lunch, Indian men ( hardly any Indian women are present in the office), did have a pungent odor, as compared to the korean or american counterparts. I mean the you could smell them from atleast 1 feet away. Us Indians need to be mindful about handwash and mouth wash after a big meal like lunch. Also after lunch use a deodrant. Or maybe switch to sattvic food. That smell has made me self aware :( Is it only because of the food? or any other genetic reason?