Gas and incendiary plans against a German invasion

What about dropping fuel containers from aircraft over a German invasion force as a quicker response than gas?

Both methods were considered together. The remembered sequence was gas followed by fire attacks, but that recollection is tentative.

The recalled British plan combined gas attacks with fuel-container drops against a German invasion force. The tentative sequence put gas first, forcing troops into protective equipment before the fire attack. Both methods were contemplated together for defending Britain during an invasion. The severity of these preparations reflected the determination to resist that invasion.