It's essentially pure kerosene, which is extremely volatile, and some anti-corrosion chemicals. Hydrocarbons may be marginally increased in the air for a while,

It's essentially pure kerosene, which is extremely volatile, and some anti-corrosion chemicals. Hydrocarbons may be marginally increased in the air for a while, but it's nothing compared to the amount of hydrocarbons released by cars and trucks on a road. Although there have been cases where jets dump fuel too low and it lands on someone without having time to vaporize. For instance one case where a 737 dumped fuel on a playground. https://www.latimes.com/california/story/2020-01-14/plane-dumps-fuel-on-students-on-school-playground-en-route-to-lax-officials-say https://www.latimes.com/california/story/2020-01-14/plane-du...