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.
dissolve disÂ·solve (dÄ­-zÅlv') v. disÂ·solved, disÂ·solvÂ·ing, disÂ·solves. To pass or cause to pass into a solution, as salt in water. To become or cause to become liquid; melt. To cause to disintegrate or become disintegrated.