Drug-addicted dogs are likely to be able to smell edible marijuana products if they have been trained to detect them. However, some experts believe that when cooked, the chemical composition for which dogs have been trained to smell could change. Yes, drug-addicted dogs are trained to smell vaporizer cartridges. But it's not the strollers themselves that dogs are trained to smell.
Rather, they are trained to smell THC, which is present in concentrations of 0.3% or less in full-spectrum vaping cartridges. This means that these sniffer dogs can find vape carts that contain THC, even in very low quantities. The only way drug sniffer dogs can detect food or something that isn't legal is when they're trained for it. Otherwise, they could raise a false alarm.