Revisions log for Answer #1008
This is the answer to the question Why does it smell like sewage from the shower?
Revision 1
Improperly installed shower enclosure, the siphon is too close to the floor, the water from the shower does not go out well, stagnates.
To solve this problem the cabin must be raised higher, or change the siphon on a flat.
Or the siphon must be cleaned, I have a siphon with a revision, it is enough to unscrew the plug to clean it, in other cases, the siphon must be dismantled.
Perhaps not a properly assembled sewer, without the necessary slopes.
Sewage in apartments (houses) in common for several premises (bath, kitchen, toilet), if you do not observe slopes, the pipes can clog for example grease or food waste from the kitchen.
Apparently you have a clog in the area after the shower (stall).
Pipes can be cleaned with a sanitary wire, or chemical method (it is less effective, but if the clog is not critical, you can use it).
Perhaps the slope observed, but pipes are not fixed firmly with clamps (to the wall or the floor), the pipe sagged, hence the problem with clogs and as a consequence of smells.
May have long been out of the shower (went away for a long time), the water in the trap dried up, no trap, hence the smell of sewage from the cabin drain.
Odor trap is a barrier to the entry of unpleasant odors of sewage into the room.
Or that the odor trap is torn off (pressure drops, improperly assembled sewer, clogs).
The causes may be other, for example there is no complete sealing of the drainage system, find the problem area, replace the o-rings on PVC pipes, or gaskets on the trap.
Perhaps when installing a sewer in addition to the straight sections there are sections with turns, used 90-degree angles (instead of 45) in large numbers.
Pipes are clogged in these areas, the smell due to clogging and even partial (water goes, but slowly).