Just take a fucking bus. If you must drive then this will work as well. It helps with the oder. wrap it up tight in a few gallon size freezer bags. Use a large tupperware container filled with Petrolium Jelly (AKA vasoline), Put the freezer bag in the middle of the vasoline filled tupperware, seal up the tupperware and place it into a black trashbag and put that into your luggage. This will take care of the oder problem. Also, add some mothballs to the suitcase aswell, for freshness. If you don't give them a reason to suspect you, chances are they won't. There is no fool proof way of smuggeling drugs.
I have seen people use C02 tanks that have been opened and filled with drugs (cocaine) and then dragged under a boat untill they get to there destination. If they are being trailed or may be getting borded, they just dump it.