Pepper spray

[Bonnox]

This is obviously a purely hypothetical thread obviously as it is completely illegal to use or own any type of pepper spray, I merely currently have some chillie sauce and am talking post shtf.
My chillies are bhut jolokia, or ghost chill is, apparently the second hottest chilli in the world, Indian security forces use them in their pepper spray and smoke grenades.
My first thought was a water pistol but they are wholly unreliable, iv heard somewhere of some chillie type products in paintballs, gives you the same kind of effect with a hell of a lot more punch, I would definitely be thinking twice if I got hit in the face with a paintball full of chilli pepper juice