I got to thinking that if I'm going to teach 'no', there are some other commands that I could usefully add to our repertoire.
Chin - for when she realises that we are going to the beach. This command would ensure that she only licked my chin, and not my sunglasses so that when we got to the beach everything would not be a grey blur.
More sleep - Thommo knows this one and gives me another five minutes, but Dusty interprets it as a command to dig my head out from under the blankets.
Not there - When she wants to bury a bone, she wanders around with it in her mouth thinking about the relative merits of the sofa, the bromeliads, the magazine rack as hiding places. A 'not there' command would help her make an informed choice.