I made the extremely foolish decision, MANY years ago, to personally test CS gas, Mace, and 5% pepper spray. Mace was like really bad perfume -- I was a little teary-eyed but good. The CS gas was a bit unpleasant. The pepper spray was deliberately a much lower level of exposure, and it put me down. I was totally unable to function for about twenty minutes, until decontamination was more-or-less complete.