We live in a split level house. We have a mysterious smell, like a skunk that comes and goes and not always in the same room. Sometimes it is in the hallway, other times near one of our fireplaces, sometimes in the stairwell, and these areas are separated by as much as 50 ft. Most of the time we smell it in the evening. We live in the country, so the first time we smelled it we thought a skunk was outside, very near the house, but we don't smell it outside. I've heard people say electrical wires can make that smell. Others say it could be drain water. Does anyone have an answer?