Cops will also, at a stop, rub their finger on a car as they initially approach it.
We know now that this is to create false positives.
What is on substance on the cops’ finger? BBQ sauce? Bacon grease?
I don’t know, but when you view the videos it is apparent that dogs love it.
I know they will touch a car to see if it still running.
bacon grease?... hmmmmm.