How does sewage smell?
Sewage smells like sewage it stinks
At the sewage plant sewage has a wet heavy odour like animal waste it i not entirly unpleasant and is easily acclimatized to, Texts refer to this aroma as earthy, farmlike or even goatish.
Earthquakes do not have a set smell as they are caused by tectonic plates clashing together this does not emit a smell. Although when an earthquake strikes a city for example sewage systems can be destroyed leading to a smell on the street. In other words, an earthquake smells like whatever odors it stirs up.