Sarri admitted the mauling suffered against Pep Guardiola's men was hard to comprehend.
Before the half hour mark was in sight Ilkay Gundogan had added a fourth for the Premier League champions and Guardiola had rather forgotten about Aguero's miss you feel.
Chelsea were thumped 4-0 at Bournemouth last month, a result that equalled their 5-1 loss to Liverpool in September 1996, but this one obliterates those defeats from the record books.
Jurgen Klopp's men maintain the advantage of a game in hand, but handed a reprieve by Liverpool's draws against Leicester and West Ham in recent weeks, City look determined to become the first side in a decade to retain the Premier League.
Aguero's second was gifted to him. Aguero was lurking in the six-yard box and punished the former Everton midfielder with a sharp turn and shot.
Emery wants Arsenal players to seek immediate cure for travel sickness
The loss offers the Gunners a setback in their quest to secure a return to next season's Champions League. Campbell told talkSPORT : "I think Unai Emery has done a really good job so far".
Aguero was inches away from completing his 15th City hat-trick when he headed against the woodwork from a De Bruyne cross.
Sterling wrapped up a brilliant afternoon's work after substitute David Silva opened up the Chelsea defence yet again and Zinchenko picked out the England worldwide.
Not content with all that, Kun also positioned himself as the top scorer in the Premier League against Chelsea, with 10, one more than Shearer.
The Senegal global headed home at the near post following a James Milner cross after Bournemouth had failed to clear a corner. The striker had been dropped from the starting lineup and only came on to take the spot kick after Tottenham defender Jan Vertonghen knocked over James Maddison.
Chelsea' Twitter admin certainly won't be looking forward to it, that's for sure.