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.
Dissipate means disperse or fade away â as a bad smell will dissipate (usually) if you wait long enough. Dissipate can also mean âspend or use wastefully.â If you win the lottery, you might suddenly find yourself with a group of new friends encouraging you to dissipate your money (on them). Note that dissipate can be used with or without an object: Once you dissipate your wealth, your new group of friends will dissipate without a trace..