Last year we paid a plumber to switch our bathroom sinks and showers to greywater. We had already run a greywater line out from the washing machine. Almost immediately, we noticed an odor coming from our master bathroom. The other bathroom at the opposite end of the house doesn't have the odor from the grey water but that bathroom is used less frequently and the greywater dumps out far from the house in the backyard. The master bath water drain dumps out very close to the house and the water runs into a manmade dry well. Is that the problem? Should we run an exit line out far from the house for that one, too? We didn't originally do that because we were hoping to use the water to irrigate the landscaping around the house.