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.
suppress supÂ·press (sÉ-prÄs') v. supÂ·pressed, supÂ·pressÂ·ing, supÂ·pressÂ·es. To curtail or inhibit the activity of something, such as the immune system. To deliberately exclude unacceptable desires or thoughts from the mind. To reduce the incidence or severity of a condition or symptom, such as a hemorrhage.