: We have a shower in our basement bathroom and everytime I begin to run water down the
: drain, there is a very bad sewer gas smell that comes up out of the drain. Any ideas what
: the problem could be?

Could be that there is no p-trap on the shower. You should be able to see water with a flashlight at the bottom. If you can see the bend of the pipe, you may have a pipe bend instead of a p-trap.
Terry