This invention in order to keep the waste which stench does, regards the airtightness building which is designed. The building, makes inside expedient and the building communicate which destroy the organic contaminant which occurs the occasion where expedient and the waste which introduce the waste into the building are kept with photocatalyst action with the atmosphere and has with opening which is provided in the said destructive expedient.本発明は悪臭のする廃棄物を保管するように設計された密閉建造物に関する。建造物は、建造物内に廃棄物を導入する手段と、廃棄物を保管する際に発生する有機汚染物質を光触媒作用によって破壊する手段と、建造物内部を大気と連通させ該破壊手段に設けられる開口とを備える。