trees that smell like mushrooms

When I walked on campus tonight, I approached a long double line of ornamental plum trees in full bloom. Meanwhile I was looking around for the mushroom compost or mulch that I was smelling. It helped that I was listening to Radio Lab at the time and so was distracted from my usual perception of the environment. Then the light dawned--it was the tree blossoms that smelled like mushrooms. I had not connected the smell of those trees with the smell of mushrooms before.