When the air conditioner or heating unit is on, there is a terrible odor that seems to be airborne. It is clingy to your clothing and hair. We have cleaned all the air ducts, painted the entire house with Kiltz, cleaned the house with Odorban. We had an air quality test and relatively low readings. What is this smell?

Dirtysock,smell maybe?, the evaporater coil,pan it sits in probably needs a serious cleaning

When the air conditioner or heating unit is on, there is a terrible odor that seems to be airborne. The smell is clingy to your clothing and hair. We have cleaned all the air ducts, painted the entire house with Kiltz, cleaned the house with Odorban. We had an air quality test with relatively low readings. When the unit is off, there is no odor. What is this smell?

Dirtysock,smell maybe?, the evaporater coil,pan it sits in probably needs a serious cleaning