Midrasz do Hioba 2:12

Another interpretation: "This shall be the law for a leper" - this is what is written (Job 20:6), "If his height ascends to the heavens and his head reaches the clouds." "His height" - on high. "To the clouds" - to the clouds. "He shall perish forever like his own dung" (Job 20:7) -- just as this dung stinks, so to he stinks. "Those who have seen him will ask, 'Where is he?'" (ibid.) -- they will see him but not recognise him, since so it is written of the friends of Job (Job 2:12) "They lifted up their eyes from afar and did not recognise him." Rabbi Yochanan and Rabbi Shimon ben Lakish [disagreed]. Rabbi Yochanan said, it is forbidden to walk within four cubits to the east of a metzora, and Rabbi Shimon said even one hundred cubits. They did not [in fact] disagree -- the one who said four cubits [referred to] a time when the wind is not blowing, and the one who said one hundred, [referred to] a time that the wind is blowing. Rabbi Meir would not eat in the offshoots of the alley of a metzora. Rabbi Amei and Rabbi Asei would not ascend to the alley of a metzora. Reish Lakish when he saw one of them was in the city, he stoned them with stones and said to them "Go to your place and do not stink up [the outside/creation]. As Rabbi Chiya taught (Leviticus 13:46) - "Alone he shall dwell" - on his own he shall dwell. Rabbi Elazar son of Rabbi Shimon saw one of them and hid from them, as it is written: "This is the law of the metzora" - the one who brings out a bad name [MoTzi shem Ra]