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Sounds like the trap in the sink is getting the water pulled out of it. It probably wasn't vented properly.

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Q: What is wrong after installing a sink and toilet in a basement you can smell sewer?
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Do you need a trap on a bathtub?

YES, you do need a trap. Usually the bathtub drain is on the same sewer line as the nearby toilet.The smell from the toilet's discharge will sneak up through the bathtub's drain line without a trap ... not pleasant!.


What would cause a sewer smell from sinks and toilets when water is running?

Either you have a blockage present or your vents on your sewer lines have become blocked or you need to install more vents.


What causes sewer smell when air conditioner kicks on?

It could be that the condesate drain line has been connected to the wastewater/blackwater stack. The trap (hopefully installed) preventing sewer gas from moving up the condensate line may have dried out. If dry, sewer gasses are no longer blocked by the hydraulic seal... resulting in a nasty smell when the unit is turned on and the fan kicks in. Just a thought.


Can you vent a sewer drain under a porch?

Only if you want to smell the fumes all the time. Code says it should be through the roof or above the edge of the roof.


Can you be getting a sewer smell when you start a fire in the fireplace sounds crazy but when you start a fire and it begins to draw you can smell sewer?

Yes, my brother's house in CT. has the same issue and the cause is still undetermined. I initially thought that the house was so tight, that the fireplace "draw" was pulling the gas right thru the traps. That does not appear to be the case as the smell doesn't appear to be coming from the sink. He doesn't know of any vent inside the house, that could explain this. I'm going to suggest that he crack a door or window in the family room and see if that short circuits the draft and has any effect.

Related questions

Why would a sewer smell be coming from my bathroom Some of the smell went away after the toilet backed up and I snaked it?

You may need to replace the wax seal under the toilet.


What causing water in toilet bowl to move all the time and then smell sewer gas?

If you are on a septic system, it is plugged.


What causes a rotten egg smell not sewer in the bathroom but not in other bathroom on same floor?

Change the wax seal under the toilet


Why after changing toilets do you smell sewer fumes?

you most likely hve a bad seal at the wax ring.You did replace it when you replaced they toilet diden,t you?


What does New York smell like?

new york smells like a sewer,most people explain it as a toilet bowl


How do you identify a sewer gas smell in basement bathroom?

Most likely a drain has dried out and there is no water in the trap to stop the gas from coming up. Sink, shower, or main floor drain.


Why would there be a sewer gas smell in the basement landing whenever the downstairs toilet which backs up to landing the is flushed?

If there's a basement floor drain close by, sometimes the all the water can evaporate out of the trap. This can allow sewer smells into the house. Just run some water thruough the floor drain to fill the trap back up. Ditto for any drain that doesn't get used very often. More input from FAQ Farmers: * Maybe the vent in the wall isn't connected properly or came apart. I would think you'd have a sewer smell all the time but maybe it just gets bad enough when things get stirred up to notice. * Vent pipes are a major source of sewer odors. Vent pipe filters eliminate these odors while removing greenhouse gases. Used zeocarbon is then put back into the soil.


How does sewer gas smell?

Awful.


How sewer gas smell?

Awful.


Why would sewer gas smells start after an inexplicable leak under the utility sink in the basement which is now dry?

The trap in the drain line under the sink is dry. It should have water in it to stop the smell


How do you get rid of bad sewer smell?

Lime


What can cause a new toilet that has replaced an old one to periodically have a sewer smell?

It could be a bad wax ring. I would start by replacing that. also check the vent on the roof to see if it is clogged with anything