Home>Discussions>BATHROOMS>Car exhaust type smell from sink
2 posts / 0 new
Last post
Car exhaust type smell from sink


We are having a weird problem in our bathroom. When we haven't used it for a couple of hours, then flush the toilet a weird smell comes up out of the sink. It's not a sewer gas yucky smell. It's more like car exhaust. Really weird! We live in Washington State, it's pretty mild this summer. 65-80 degrees or so. The house was built in the 40's and completely remodeled before we bought it 3 years ago. Haven't had any problems until now. Any ideas??


Timothy Miller
Re: Car exhaust type smell from sink

Howdy, is your garage attached to the house? Is your sink vented threw the roof or a vacum no stack vent?
Consider checking the sink waste plumbing by running water into the sink to ensure the P or S trap is energised then flush see if same smell. Got a CO2 detector, plug it in the bath and see if it is CO2. Simply first pour a cup of Vinigar into the sink and 1/3rd cup into the sink overflow the cleansing action of vinigar may resolve the odor.

Sponsored Stories

TV Listings

Find TV listings for This Old House and Ask This Old House in your area.