Open Question: i'm camping in the woods with friends, help! allergies!?

and 18th birthday party, sleeping in tents in a field. flashlight tag/water balloon fights, weed.
besides staying away from weed, what can I do so that my allergies don't get really bad?
Thanks!!

Source:
http://answers.yahoo.com/question/index?qid=20110423074256AANHkeT

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