Forget the title and his silly hat, just hear him out. I thought it was very interesting since he used to be a police handler.
I've seen them work before at airports and music festivals and on TV and wondered why they whern't distracted by other smells. He goes onto explain why and how they work so well.
If you think he's full of it theres heaps of you tube videos about him so feel free to suss em out yourself. I'm not gunna discuss the drug issue with anyone, i just found the video very informative about how the dogs work by seperating smells and how a handler can deliberately make a dog false alert to drugs that arnt there.
See whats ya's reckon.