From their site.
If the wine bottle has been submerged in flood water potentially containing pathogens then they will remain on the bottle, label and closure. The wine poured from the bottle may therefore come into contact with the pathogens. This means that the outside of the bottle and closure, as well as the neck and rim of the bottle should be thoroughly cleaned with ethanol prior to pouring the wine and drinking it. In addition, the pourer’s hand should be cleaned. Regarding the disinfection of contaminated surfaces, 70% ethanol or isopropanol (isopropyl alcohol) diluted in water is regarded to be effective and should not taint the wine.
My concern/question is, are the bottles being marked in anyway to stop flicking as this would be a real danger as they are now 'clean' bottles with no prior provenance issues if the seller is unconscionable. So the cheap 96 Krug they got for $150 is now reborn as a normal 96 Krug which will fetch $500 through another auction house and potentially have god knows what bacteria on it.
