He's technically correct in that the "smell of ozone" is just burned/oxidized respiratory system. That's why all the strong oxidizers smell pretty much the same unless they've got "something interesting" attached to them other than boring ole O2 like ozone. On a small scale like parts per billion its a unique stinkyness and mostly harmless, so they claim. Its more of a flash burn of the respiratory system, not a slow cooked fat rendering, which in that case does kinda smell like burned meat. Smell of oxidized proteins, not so much slowly rendered fat.