I live in South Florida. My home is a one level, 2400-sq ft, u-shaped with bedrooms on one side and kitchen/laundry on the other side. I have a consistent odor but it's not constant. It comes and goes and is isolated to the kitchen area. My laundry room is adjacent to the kitchen, so my wife seems to think that the odor is more prevalent when she does laundry. I haven't made that connection. I have called in several plumbers for their thoughts and nothing was resolved. One plumber found a small leaky pipe under the sink and repaired it, but that was not the solution. Is there a specialist in "odor detection" who could diagnose the problem?