In Leviticus / Vayikra 14, we read that a priest can declare a plastered house clean after the home owner's quarantine. - Yet the clean house still requires a ritual atonement.
Why is a clean house still cursed after הִסְגִּ֣יר quarantine - in Leviticus 14?
Vayikra 14:48 "But if the kohen comes and comes again and looks [at the lesion], and behold, the lesion did not spread in the house, after the house has been plastered, the kohen shall pronounce the house clean, because the lesion has healed." ( וְאִם־בֹּ֨א יָבֹ֜א הַכֹּהֵ֗ן וְרָאָה֙ וְ֠הִנֵּ֠ה לֹֽא־פָשָׂ֤ה הַנֶּ֨גַע֙ בַּבַּ֔יִת אַֽחֲרֵ֖י הִטֹּ֣חַ אֶת־הַבָּ֑יִת וְטִהַ֤ר הַכֹּהֵן֙ אֶת־הַבַּ֔יִת כִּ֥י נִרְפָּ֖א הַנָּֽגַע )
- Yet Vayikra 14:49-53 states The-House הַבַּ֔יִת is not completely cleansed.
Vayikra 14:53 "He shall then send away the live bird outside the city, onto the [open] field. He shall thus effect atonement for the house, and it will be clean." ( וְשִׁלַּ֞ח אֶת־הַצִּפֹּ֧ר הַֽחַיָּ֛ה אֶל־מִח֥וּץ לָעִ֖יר אֶל־פְּנֵ֣י הַשָּׂדֶ֑ה וְכִפֶּ֥ר עַל־הַבַּ֖יִת וְטָהֵֽר )
- Why is this additional cleansing required for a clean house?