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.
(wÉªÃ°ËdrÉËÉl) n. 1. an act or process of withdrawing; retreat, removal, or detachment. 2. (Medicine) the period a drug addict goes through following abrupt termination in the use of narcotics, usually characterized by physical and mental symptoms (withdrawal symptoms)