Even though dental disease in and of itself is not life-threatening when caught early enough, bad breath may be indicative of serious, chronic causes for concern. Diseases of the liver or intestines may cause halitosis, and a fruity, sweet smell can usually be indicative of diabetes. When your OEB’s breath smells like urine or ammonia, kidney disease may be the reason. When you notice your bulldogge has smelly breath along with other indicators of ill health, such as diminished appetite, vomiting or nausea, loss of weight, bad mood, increased urination or drinking, schedule an examination with her vet.