We rescued a mix between a German Shepherd and something big and burly named Bodhi and he would sit quietly at the table without begging but soon a huge puddle of water would collect on the floor underneath his chops, which we laughingly named Lake Bodhi!Not at all unless he sees food or is about to puke..........so far,his lips and face are still changing that may change.
Smelling something like your roast cooking would have had drool streaming from the scuppers at the rear of his chops