Reference for Chullin 175:8

זב דלא בדילי אינשי מיניה גזרו ביה רבנן

that issue from] a man that has a flux the Rabbis decreed [to be unclean] but [the liquids that issue from] a corpse the Rabbis did not decree [to be unclean]? - [The liquids that issue from] a man that has a flux, since people do not keep away from him,<span class="x" onmousemove="('comment',' For he is a living person and people may not know that he is suffering from a discharge.');">⁶</span>

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