It is not in their head. I DO believe soooo much is parasites, candida and constipation. Rid these ailments and you will rid odor.
I say this because I CAN smell myself, lol, even my breath sometimes. I ca ALSO smell 2 of ,my best friends, one his feet, the other his BO. We 3 talk about it together, lol and know it is much more normal than thought. Most people are just better at masking it, some can't smell well, etc.
While most people DO smell, MOST people also have the common decency to not make comments about others. So NEVER feel bad about some ignorant persons comment. They are rotten in a different way. At least with our bodies we can clean out the toxins, for rude, insensitive people it will take a lot more than that. ;)