| 摘要 |
Apparatus for establishing gaseous communication between a room of a building, wherein said room contains a toilet bowl, and a building conduit disposed within the building, said building conduit being in gaseous communication with the atmospheric gases outside of the building comprising: a toilet bowl having a water level forming a water trap, said toilet bowl including a flexible, water-impermeable, tubular member inserted completely through the water trap so that a first end of the flexible tubular member is disposed on a building conduit side of the water trap and a second end of the flexible tubular member is disposed on a room side of the water trap.
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