how many of you guys can recall a JetA1 fuelled machine catching fire while hot refuelling?
I did hear of an army aviator who splashed fuel on his nomex suit while cold refuelling. He stepped away from the aircraft, splashed water on the suit, and then carefully removed the suit top - but a spark was still generated, and the shirt caught fire.
So, even cold refuelling while wearing protective gear is dangerous.
Assess the risk, do the job if the risk is low enough to warrant it. For the risk-averse, there is a nice safe office job in the government somewhere.