Can drug dogs smell edibles?

Could you elaborate on whether drug-sniffing dogs have the capability to detect the scent of edible cannabis products? Is there any scientific evidence to support or refute this notion? Additionally, are there any specific factors that may influence a dog's ability to detect edibles, such as the potency of the product or the method of consumption? Understanding the nuances of this question is crucial for those who may be concerned about privacy and discretion when consuming cannabis in edible forms.