Underarm odour and ear wax...for pete's sake !!!

Thank you ladies for your comments and the links.  Zoffiel, that is kind of what I'm thinking now (your "just some scar tissue: to 'We need...).   Kath, I hear what you're saying re the stress, but due to other circumstances, I'm doubtful that that's the answer in this case.  Interesting that other ladies report the odour being of onions.  Mine just smells really really bad - off the meter on the left where the lymph node scar is, and very slightly, on the right, and it's definitely 'sudden onset'.