Use reasoning to lead to the answer of the following question:
Why would someone be likely to avoid kissing?\nOptions:\n- arousal\n- shortness of breath\n- herpes\n- strong feelings\n- confusion
 Reasoning process:
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Herpes is any of a group of virus disease caused by herpesviruses, affecting the skin often with blisters or the nervous system. Someone would be likely to avoid kissing due to herpes. Therefore, the final answer is herpes.
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