We are having a strange problem. If I run our dryer with only one or two items in it, I get a sewer odor in the laundry room. However if the dryer is full of clothes I do not get the odor.
I am wondering if there could be a plug in the plumbing venting.
If I run only one item, there is more air being sucked out of the house than if the dryer is full. This may draw the odor from the washer discharge pipe. Does this make any sense at all?