Most grocery stores will carry Turkey Bags. They are large and at a pretty decent price. Most of the smell stays in the bag, you could always double bag it too.
You can get Loksak bags at most camping stores. They're supposed to be smell proof to wildlife and come in sizes big enough for qp or more. I've only used them for camp food, so i can't vouch for how well they work with reefer.
http://www.smellyproof.com/
i got a few sample bags at a hydro shop a little while ago
they seemed to work just fine.
the zipper action maybe been a little easier to work with than tying/untying knots in the turkey/oven bags...
personally i prefer the larger reynolds oven bags.
just buy a food saver bro!! sellem at any wal mart... and you'll have a better peace of mind that its really sealed and smell proof!! theres two settings vacuem or just the seal setting...
Saran wrap is smell proof but isn't so great on visual appeal. I received ~1/4 ounce of catpiss in the mail and couldn't smell a thing until unwrapping the last layer or two of wrap
you need a vacuum sealer.. you can get them at walmart.. they will have bags where ever you buy the sealer. you can also get an attachment piece to air seal jars.