It seems that there is a common denominator becoming evident in these recent incidents. Ground staff 'smelling alcohol' on the breath of pilots, jumping to a conclusion, and pilots being wrongly accused of being drunk (zero blood alcohol now reported in the two most recent events).
I'm not being facetious when I say this, but perhaps a handful of TicTacs on the crew bus might have saved some careers.
Not excusing drinking before flying mind you, not at all, but since a mere allegation now seems sufficient to bring down swift and final judgement....I'll be carrying my Polo Mints in future...just in case.