When a distracted baker forgot to shut off his oven and destroyed half a city. A pie in the oven was the cause of the Great Fire of London in 1666. Baker Thomas Farriner got distracted somehow and his bakery on Pudding Lane caught fire, leading to the destruction of over 13,000 houses.
And that would be pounds to kilos.
Planes measure fuel in weight units not volume!
#10
And no, it was the fleas on the rats that carried the plague!