Here’s a video of Heroes hassling some motorists using the “I smell pot” excuse. All the Heroes have to do is utter the magic words – and the Fourth Amendment’s probable cause requirement prior to a search evaporates.
Note that there is no objective standard here. All the Hero need do is claim he “smells” the aroma of an arbitrarily illegal substance. Then he can ransack your vehicle and person – and sic a four-pawed Hero on your vehicle, including the filthy animal’s claws – all over your car’s paint.