Hey, I have plenty imagination. :) I'm sure it does happen, but on a house that is 25yrs old? And we are the first to notice? lol Gosh, I hope not. Wouldnt' that be something a house inpector would notice? You'd think so. Or the other guy that was up in the attic area right above the laundry...
We just moved into a new/new to us house. It was built in the 80's and has an indoor laundry room, with the carport converted to a garage. The house is concrete slab. While securing our dryer vent we noticed that we can find no exit/outside vent. Even with the dryer on we see no signs of it...