My dog was prescribed Atopica about 6 years ago. She was so bad St. Bernard doses every day for months - far beyond what Atopica said was supposed to be used - did not help her and the vet gave up in about a year with that. ;-). All she got was vomiting and diarrhea a lot, poor thing.
I have no idea why some dogs stink. Maybe it’s just random, and it would be interesting to see if any breeders keep track of who their stinky dogs are, even when they’re not diseased at all.
If it shortens her life I will be sad but at least she doesn't scratch herself bloody when she takes it.
The only other thing that stops the itching is a cortisone shot and she can't have more than 2 a year of those and it only last less than a month when she gets one.