We have a urine smell coming from our heating vents :eek: it just started today we have no pets so it can't be that and we rent our home and to call the landlord would take him 6weeks to even come look at it. (slumlord) But it is so gross it is making us all gag from the smell it smells like old human urine and it is about 30f out side and going down to 7f so no hope of just turning the heat off it only comes from the vents started today and only when the heat is running.
And just in case someone is thinking it no no one used ithe vent as there personal bathroom lol