Halloween // Need Help on Blood Spray!

I’m looking for a way to have blood spray from my mouth for my Pennywise costume as part of my haunted sewer trick or treat setup. I’ve tried one of those refillable liquid spray bottles at 110 psi but even with an appropriate nozzle, doesn’t do what I want. I’m just looking for a quick, 1 seconds, spreader spray.

I’m thinking compressed air (keyboard cleaner) into a reservoir with fake blood that uses the pressure to expel the liquid but I feel like I’m missing an obvious answer. Gotta be portable, allow for controlled bursts and be minimally visible , which add some challenging constraints.

Any ideas?