
I have never had any of my dogs anal glands evacuated manually, I have occasionally smelled that smell when the dogs have passed a stool and it has activated their glands, it soon goes away.
I was warned by several work colleagues that the vet we used was automatically emptying the anal glands at the pups first visit, they were then having to take the dogs back regularly for further treatment, my other vet[ I now use 99%of the time] told me that it was rare for them to empty naturally after being done manually so I watch the vets like a hawk when pups go in for vacs and check up.