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.
reÂ·cede 1. (rÄ­-sÄdâ²) intr.v. reÂ·cedÂ·ed, reÂ·cedÂ·ing, reÂ·cedes. 1. To move back or away from a limit, point, or mark: waited for the floodwaters to recede. 2. To slope away from a point of reference: a man with a chin that recedes.