I spoke with a pulmonologist, who also is a competitive cyclist, about Froome's doping, as I take many of the same meds as him.
His assessment was that Froome's positive test is not a big deal. It amounts to a couple extra puffs on a short acting inhaler that has limited effectiveness. He said he could easily see a person who legitimately has Asthma needing extra puffs during a hard, hot stage. Had Froome turned up positive for longer acting inhalers, that would have been a bigger red flag.