Our 12 year old lab-ish is getting pretty rank, and it's not an issue with bathing. It smells like she is rotting from the inside out to the point where we can now smell her before we see her. Anybody have any ideas before we take her to the vet? My wife started giving her apple cider vinegar in her food to no avail and we also switched her food to no avail. Smells like she could have a glandular issue or perhaps some kind of infection. Any insight would be appreciated.