THC, like CBD, is not what the dogs will be searching for, so its removal doesnt help. If you want to be 100% sure that a drug sniffing dog will not find your CBD product, the safe bet is CBD Isolate. CBD Isolate. CBD Isolate comes in an odorless, tasteless fine white powder that resembles floor in many ways. Because the terpenes and other plant matter has been removed, there is nothing for a drug dog to smell to identify the product for what it is.