If it is in sealed containers in the trunk, nothing.
Kerosine and heating oil are the same thing
Nothing happens
you die
pain
You Die
you die...
You can get chemical burns along your throat and stomach if you swallow lye.
You burp bubbles
It depends on how much you swallow. If it is a large amount, you could get diarrhea and/or vomit.
Most common jet fuel is kerosine based and not corrosive.Most common jet fuel is kerosine based and not corrosive.
This too will pass.