Nurses...I am so glad I found this website. Anyway, my husband's breath smells like mothballs. Yes, it is disgusting. I am making him an appt at the internist tomorrow. This has been going on since Thursday...poor guy has brushed, flossed, scrubbed and used Listerine like crazy. He feels fine. I guess I am asking if you all can think of some reason for this!! I have looked and looked online and in the Merck Manual. All I find is acetone smelling breath for ketosis. And his breath smells like an old man...reminds me of my father in law (66, had prostate cancer 5 years ago). Help!! My husband has no s/sx of diabetes. I have even done finger sticks...always less than 110. He had this happen about a year ago but we can't remember what or when it went away. Thanks for any help or insight.