I know you're trying to be helpful, so I'm not going to take insult to this. I think most people are reacting to the 'you smelly people' bit, which can easily be taken the wrong way (delicate issue here, try to be sensitive). It's a condition that isn't taken seriously by the medical condition at large and is often scorned by people that don't suffer from it. The issue is a symptom that can be caused by a large number of illnesses/health problems so sadly there's no one-size-fits-all cure, though I agree with you that diet is often key!