Michael O'Leary is an exceptional aviation executive, but don't go to him for your cough. Unlike Nphet chief Tony Holohan, on whom the Ryanair boss launched a scathing attack last weekend, O'Leary does not have to stand over his pronouncements on Covid. Neither does he have to justify to anyone but his shareholders his airline's marketing campaigns - even when public health doctors would prefer that everyone stayed at home. O'Leary's job is to put bums on airplane seats and Dr Holohan's job is to keep people out of hospital beds. Both men have had a difficult time achieving those aims.