You get up and fight! First you push off the ground and toss the elf off your back. Then you take off your shirt, it's got that powder crap on it and you never got a good look at it, could be anthrax or some poison. As you start turning toward the elf he again jumps on your back, this time grabbing his hands over your eyes and trying to force you to the ground. Groping blindly you get a firm grip on his arm and throw the little asshole to ground. With your sight returned and your attacker disabled, you stand victorious with one foot on his chest. "Tell me what the fuckin hell you were trying to do! I said I didn't care about the danger, I was willing to take the risks! Maybe I should see what this shit does to you!"
"No wait, pleaseI was just trying to..."
"To what?! I told you I would take the risks! I told you I didn't care about this danger that I doubt even exists! You hesitated when you told me about those 'furies'. That's a pretty good indication that your lying."
"Well aren't I proof enough? If I'm real then why not furies?"
"I ate some mushrooms earlier today, your probably just a hallucination. But even if your real, I'm still going on and you can't stop me, and if you even try that stunt you just pulled, I will kill you."
And with that, you continue on your way. You figure that it would be best to leave your shirt behind as the dust crap could rub off on you, and you still don't know what it is. Yep, better to leave it than get sick or die. Furies, right. No such thing as animal people.