If you ever get the chance, to sample the truely excellent 'Fish and Chips' at the chippy on the harbour at Anstruther, Fife. You might detect a faint odour of AvTur............ Probably due to the Bizzillion Tons dumped over the years by jets.
It takes nearly 30 mins to dump an entire 'Fat' F3 of fuel, and I personally have needed to do that on several occasions straight after take off. As one other poster pointed out, while we still fly VC10s, we might as well leave the porch light on, with a 200W bulb in it.....
I personally think, the planet will be just fine, we (humans) might not, but it will.
Regards,
Advo