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.
To dissipate is defined as to lessen or disappear, or to cause something to lessen or disappear. An example of dissipate is when rain starts to let up or goes away. dissipate. dissipate.