
As a non spaniel owner I do know what you mean about smell, some dogs definately do smell more doggy than others, and the gundogs, and a number of short coated breeds to my nose smell doggy, but then the arctic breeds and Spitz in general have very little odour (though of course they fart and can have bad breath :D)
This should not be confused with the fould odour that some neglected cockers can have. I have smelt cockers with infected ears and mouths at freinds who groom. These have usually been elderly animals with rotten teeth, and where ear care was previously neglected causing recurrent infections.
Of course a dirty dog will smell, and cockers with their long ear feathers when sniffing the ground will get them wet and muddy, and of course even drag them through their own wee, so attention to hygene is essential.
So I woulld agree with the ladies above a well cared for Cocker fed correctly and maintained in a clean manner should not smell more than most other dogs, but they wil of course smell of dog, especially when wet.