The Stinking Smell
The smell was coming from the last meal that Edith had in this house before she left this place. On that last night, she had eaten caviar and shrimps, and the smart woman never disposed of the leftover. Rather she disposed of the food particles in the curtain iron rod. The leftover kept on rotting in the sun and caused that awful smell. What an idea she used.
Really Clever
Edith got the iron curtain rods cleaned. The rotten food was thrown and so were the rods. New iron rods installed and the house was as good as always. Edith was now living in the same mansion her husband had asked her to leave like a queen. You Go Girl!