I had a friend who diddnt want to smoke bcz his dad was going to give him a drug test but he was feening so bad so be bought some dank and told me 2 smoke a couple bowls by myself in front of him and shotgun him every hit by me blowing it in his mouth and he told me and he also looked so ripped out of his mind.. so i belive the bag would work bcz i've done it and also holding it in works really well and the best is to blow it through your nose so it goes to your brain....