I'm not familiar with cocaine but if you swallow a bag of cocaine would it do anything? Because since it is in a bag, the power itself won't actually interact with your body until it hits the stomach and at that point your body will digest it, but anyways most people sniff cocaine in order to get high. I don't think I will get high if I swallowed a bag of coke.
Have you seen this here movie: Well, not exactly that, but... yes, they CAN. See the "How to identify a SL**" thread.
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depends on if it was sealed or not. From my experience around cokeheads, most folks only carry around smallish baggies(unless they deal, and even then the baggies are pretty small)