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> smelling the thing (mostly machine oil and steam, and a hint of ozone near the transformers)

Possibly just metal oxides or dimethylsulphide, as ozone is odourless.

Next time choose your sources more carefully. Not only ozone has smell, its name means that.

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.

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