You may have a floor drain with a dry trap.

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Keep the whole world singing . . . .
DanG (remove the sevens)




"chattydani22" wrote in message
ups.com...
Today I went downstairs and noticed that the bathroom down there
had a
horrible smell. Like a sewage smell. We dont use the bathroom as
we
noticed a year ago that the toliet leaked and the basment isn't
finished. We have been dumping the dehumidifer water down the
sink
drain.
What could be causing this smell????