That is not a new method. There is even a Locked Up Abroad episode that someone gets caught smuggling coke in shampoo bottles through the airport.

I would think it is quite common and effective to throw off drug dogs.

3 bottles and one tests positive for coke, I am not sure what anyone would reasonably expect the officers to do here besides arrest the guy.

Seems straight forward though this guy is owed a good amount of money from the Canadian government for his troubles.