Assertion: vampire's human | /r/HasAspect | added benefit
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Source sentences:
text: Humans who ingest vervain also have the added benefit of making their blood unappealing to vampires as a result of the weakness and burns it causes; however, most vampires are unable to tell if a human has been ingesting vervain unless they are somehow able to smell it on them, so it does not always ensure that a human is completely safe from vampire attacks.