I would probably leave the area before I see him. I assume Phil's hobo stink would be smell for over a mile and I would mistake it for sewer that is overflowing.
I'd run away. Not because I was afraid of him, but because I'd probably get hit by stray bullets when the incompetent drive-by shooter missed him and hit me instead.
I'd probably approach him to see if he's really that batshit in person. I have tons of questions for him, since as we all know, learning more about him only raises more questions.
Then I'd probably call a hazmat team to decontaminate me.