Or if governments would stop trying to control what citizens choose to put into their own bodies. Then there would be little need for drug smuggling.
But that’s a topic for another debate.
I suppose we might still have sniffing dogs to detect bombers or hijackers on planes, though there is some argument if such is the most effective prevention.
It was an older woman (maybe 60s) TSA agent. She was wearing the uniform and everything. I gave her a dirty look, but it wasn’t worth getting a multi-hour interrogation over. I was wearing normal, snuggly-fitting jeans with nothing covering them. There was absolutely no way I was smuggling anything in my back pockets that would not have been visible. And yes, I do have a nice ass. 
Anyway, the joys of air travel. Bleh.
You also lose your 4th Amendment rights anywhere within 60 miles of the Southern Border as well as in any area declared by law enforcement as a High Intensity Drug Trafficking Zone, examples being I 20 west of Ft Worth and U.S. 69 in East Texas. Refuse a request to search and you get to squat on the side of the road while they send for a crotch bumper to check your vehicle. At least 200,000 square miles of America where the Constitution explicitly does not apply to law abiding citizens. Then there’s the whole FISA deal, don’t forget the fact that the President has the right to execute American Citizens abroad by bumping their privates hard with a drone strike no due process required, thank you. And there’s also the whole Kelo v. City of New London thing…
These dogs are highly trained and are only going to smell your crotch because you left a scent trail of drugs for it to follow to your crotch. If you’re not smuggling something, the dog won’t pick up any odor to trace to your person.
I didn’t think I looked for drugs anymore at the airport. I thought they were only looking for bombs.
Good point. Responses are valid either way. People hide “things” in their underwear. Dogs are trained to sniff for “things”, not your junk. You’ll get a nose in your junk if your junk smells suspicious, not delicious.