Some dogs do seem to smell more doggie than others - strange though that it's "suddenly" with your girl.
I remember once I stroked a Sharpei and my hands smelt for several hours after - I'd find it hard to live with that kind of smell although the dog herself was very sweet

(stroking her was like stroking furry jelly :P ).
Banya only smells after she's been in the marshes/bogs. Has your girl been anywhere like that, which has kind of dried out and become smelly?
Banya never gets bathed unless something unusual happens - she does go in forest streams but that's about it, luckily Belgians smell absolutely wonderful
and don't really get "doggie".
Hope you find the cause, it is a bit of a mystery.
Lindsay
x