Thanks all!
What's funny is that I was watching the Paria Canyon hike on Jamal Green's YouTube channel not 10 minutes after I posted this question when he mentioned that Russian Olive was and an invasive species and showed the trees. I Googled it and confirmed the same before I was able to check back here.
I love the smell and wanted to plant one in my Pennsylvania yard, but I guess I won't be doing that now...
FYI...... my photo was taken in Colorado Springs, but I first smelled it in Spring in Moab, UT.
Fred