I've seen this bush both in the Denver CO and in the Amarillo TX area. It has a pleasant warm smell. The specimen photoed is about 6 ft tall and 6 ft wide though I don't know how much bigger it might get.
I'm trying using those planned identification apps with little success, I got results such as white willow which this plant clearly is not, based on comparing photos.
In Denver it grows in a mostly uncultivation area next to an unused irrigation canal, but could be an invasive or a transplant. Bark is smooth and the leaves are thin and fold easily without snapping. The smell comes from the bush in general not from any apparent blooms or from disturbing the leaves.