Smell Coming from Bathtub

Hi,

My wife and I live in an apartment building and she is 9 month pregnant. Off and on over the past few weeks a rather terrible smell will come from the shower area. Its somewhat hard to describe. Its kinda sulfur but it also smells like sewer gas. It lasts for several hours (usually at night) and then slowly disapates. The building manager has poured a number of products down the drain including something to kill bacteria.

I'm really worried about this given the nearness of her due date. Is there anything I can do about it?

is there any black color stuff in the shower. does it only happen after someone takes a shower.

There is a clue to the fact that it only happens at night given that it's coming from someoneelse's apartment when that person takes a shower or bath. Given your wife is pregnant raises concern to the situation.

Greetings wisgaragedoor welcome to the Forum.

Every Shower/Sink/Tub/Commode "should" have what is called a "P-Trap", between where you access the facility, and the Sewer Line.

I wold presume that one was installed on your Shower, and via some unusual circumstances..
1. Separation in the Pipe.
2. Crack in the Pipe.
3. Improper Venting of that Line.
that the level of water in the Trap is being evaporated or in some other way, reduced to the point where the Sewer Gas is retuning into your bathroom.

You could get the Apt Mgr to hire a Plumber to do an investigation and repair, which you probably could "force" to happen, since those gasses are dangerous.

In the mean time, why don't you buy one of those flat rubber Sink Stoppers, and just lay it over the Shower Drain overnight/when not using the Shower, and start a serous* complaint process.

Have a good Day !
S.W.

* = Serious, like in a Public Health Issue.