I used POR15 about 15 years ago and wanted to relate my experience.
First the job held up on the floor pan of my 72 Z  which I had another 8
years.
Second, even though I followed the precautions to the letter, regarding
full body coverage clothing and a respirator mask, I made a serious
ommision after spraying the por15.

The following day, I was cleaning up and  sweeping up my shop.  Well, I
didn't use the respirator and probably breathed in some dust laden with
POR 15.  That night I had a  racing heart rate, and after a scary night
and visit to the Dr, the next day, He said I definately was fighting
some type of bug, and felt that the POR15 was probably the cause.

so if you spray this stuff, be careful about clean up too!

Sincerely,

Mark Keller