When you smell sewer gas from the kitchen drain, it often means there is a blockage in the vent or the drain pipes inside the wall. If either of these are clogged, there is no place for the water to go without first forcing the air, which is combined with sewer gas, back into the room.,
Sewer gas is a byproduct of the breakdown of natural human waste. ... The hydrogen sulfide in sewer gas is what gives it its signature rotten egg smell. Sewer gas isn't necessarily toxic at low levels. However, chronic exposure, or higher levels of exposure, can cause symptoms of sewer gas poisoning.Sep 20, 2019
Exposure to low levels of hydrogen sulfide causes irritation of the eyes and respiratory tract. Other symptoms include nervousness, dizziness, nausea, headache, and drowsiness. This gas smells like rotten eggs, even at extremely low concentrations.Jan 11, 2021
Sewer odor comes from the breakdown of human waste and includes harmful gases like hydrogen sulfide and ammonia. Small doses of these gases won't harm you, but chronic exposure can be toxic.
If you have, you may have experienced phantosmia – the medical name for a smell hallucination. Phantosmia odours are often foul; some people smell faeces or sewage, others describe smelling smoke or chemicals. These episodes can be sparked by a loud noise or change in the flow of air entering your nostrils.Oct 2, 2018