I think that's dead on. And that effect is not be too surprising if you consider some more examples: the smell of cooking bacon can get your stomach growling an

I think that's dead on. And that effect is not be too surprising if you consider some more examples: the smell of cooking bacon can get your stomach growling and your saliva flowing. Indeed, as Pavlov famously showed, even a ringing bell can get you salivating after the association is established.