Some people only have the problem when they run water in a sink or a bathtub. The source of the odor in almost all of these instances is a buildup of biofilm on the sides of the pipes that connect the sink or fixture to the actual P-shaped trap under the fixture.
Subsided is defined as  calmed down or sunk to a lower level. When the noise of a crowd dies down, this is an example of when the noisesubsided.
transitive verb. 1  To make (pain, for example) less intense or more bearable: a drug that alleviates cold symptoms. 2  To lessen or reduce: alleviate unemployment.his woman hopes these things will alleviate her headache. This woman hopes these things will alleviate her headache. The definition of alleviate is to make something easier to deal with or endure. An example of alleviate is to take pain killers to ease the tension of a headache.