I do tend to perspire more than most people, but I don't sweat there any more than anywhere else on my body. I don't get this odor from any of the other usual suspect areas of the body. I suspect that the smell is from bacteria living behind my ears and/or on my scalp and then perspiration carries the odor down and around my neck. If I can find something to kill off that source, I think that would solve my problem. I have tried taking chlorophill capsules to no avail. Any other ideas?