There is a pungent smell of rotten eggs or garlic at home. My mother said it was from the bathroom. Is this poisonous, hydrogen sulfide or something?

The pungent smell of rotten eggs and garlic returned from the sewer of sewage pool may contain hydrogen sulfide, but the content is very small, which is harmless to the body, but it affects the quality of life.

Check, because there is a ventilation pipe on the roof of the sewage pool sewer riser, every household in the sewage pool sewer has a submerged bend to isolate the smell of the sewage pool sewer. If there is a dive without a dive, if it is normal before, then there are two possibilities for this phenomenon after the flat slope is changed. One is that the construction is not in place and the ventilation pipe is covered on the roof. Another possibility is that residents on the roof illegally use the roof. No matter what the reason is, you can reflect the reason to the property management.