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sewer gas. either your trap has run dry from lack of use or is improperly or not vented causing your line to syphone. this will cause the water in the p-trap to syphone out allowing the sewer gas to ecsape.

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Q: What would cause a very strange odor coming from a shower drain?
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Related questions

What would cause a sewage smell to come from your bathtub shower after it is used if there is a septic tank?

check or have a plumber check p trap in drain line under shower. if leaking [losing water] it wont stop sewer gas from coming up the drain. probably the most likely cause.


What is the cause of downstairs shower and floor draining backing up?

The main drain is plugged. Not completely, but enough that it is easier for the upstairs water to come out in the shower and floor drain instead of going out the drain.


What is the cause for drain debris in tub and shower?

hair and soap scum which is grease


Why would your bathroom shower begin to flood everytime you use your upstairs shower or sink?

The shower drain and waste lines on up to the other fixtures located above need to be clear so that water will flow. Just downhill of the shower drain there is probably a blockage in the waste pipe. The blockage could cause slow draining. If it is completely blocked, the shower pan will not drain back out over time. You will need to run a plumbers snake down the line below the shower drain. If the toilet in the same room as the shower when flushed also shows water coming into the shower drain, it will be best to take up the toilet off the base and run a plumbers snake from that point. Warning for very slow draining lines or lines that do not drain, DO NOT use Drain cleaning chemicals. Good luck and you may wish to call rotorooter.


How can i get rid of the nasty sewage smell that is coming up the shower drain?

see that vent is downstream from trap


What would cause sewer in a shower?

full block of main drain. shower is lowest open area for back up to occur.


Is the shower drain has a ubend or straight pipe?

Shower drain goes into a trap under shower. Continue piping from trap to drain line.


How do you know if shower pipe is clogged?

Water won't drain from shower. Either trap or shower drain line is clogged.


How does the trap keep fumes from coming in a house?

The trap is a P or S shaped bend in the drain pipe which retains water to block gases from coming out of the drain. Traps are located under the sink, under a shower or bath tub, and they are formed into the drain path of the toilet.


What would cause the garbage disposal in an apartment to back up into the bathtub which is now not draining?

Your kitchen sink drain and your shower drain are connected to a common drain line. There is some sort of blockage in the drain line past the point where the shower drain ties in. You need to call a plumber to run a snake through the drain line from the kitchen to where it ties in to the main drain of your house.


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.


Could bowel movements in the shower plug shower drain?

YES.