The two most noticeable floral scents of Los Angeles both become apparent in May or June and last for several months. The more pleasant of the two is night-blooming jasmine, as most Angelenos refer to it. I love taking walks in the spring and encountering a display of jasmine blossoms. The other scent does not smell as good, but is more beautiful. I refer to the jacaranda tree, which originated in Paraguay and Argentina and eventually became a denizen of Southern California. It purple flowers are beautiful, but there is a slight acridness to the smell of the blossoms.
Note that, in the above photo, there is a layer of fallen jacaranda blossoms under the tree. If one parks one’s car under a jacaranda, the blossoms seem to stick and, well, stink a bit.
Perhaps my least favorite smell in Los Angeles is not floral. In the fall, when the Santa Ana Winds blow, parts of the city, especially the hills, catch fire. The air is filled with tons of ash that tends to cause asthmatic attacks. Fortunately, I have not experienced that for quite a few years—and my fingers are crossed.