I don't have an answer for you, but I thought I'd briefly relate a spill-causing-irritation story of my own from many years ago.
To make a long story short, I spilled the liquid from a wholesalers size can of sliced jalapeno peppers on my crotch. Holy shit, that stuff soaking your genitalia is NOT A GOOD THING. I had to leave work early to go have a shower. If the lighter fluid feels anything like that, I am so sorry for you.
God, just thinking about it is making my testicles crawl up into my abdomen.