This must seem a strange street name if you only know “ozone” in terms of the ozone layer, that part of Earth’s stratosphere which absorbs ultraviolet radiation. But back in 1902, when this street was named, “ozone” meant fresh, sweet-smelling air, the kind you could inhale at the Ocean Park shore. (The root of the word is the Greek ozein: “to smell”.) Ironically, real ozone – not the stratospheric stuff but what you’ll find at ground level – is a toxic, foul-smelling gas: a major component of smog. The seaside bit of Ozone Avenue was named on the Golden Bay tract, owned by Abbot Kinney and partners on land sold to them by Matilda Dudley (formerly Brooks). Its inland extension was added in 1905. Don’t ask me why part of the latter is called Ozone Street.