Arduino Spray? Water Shooter? FLAME THROWER?

Quick question for a future project.
How could I make an Arduino spray a liquid? As in, shoot out the liquid? Perhaps with a normal spray can somehow hooked up to an Arduino? So yeah, basically an electronic spray can.

I could make the Arduino spray water at people!! OR I COULD MAKE IT SPRAY A FLAMMABLE LIQUID OVER AN OPEN FLAME, MAKING IT SHOOT FIRE!!!! (Not saying I'm gonna do that)

Thanks in advance!
-SQ

Or perhaps I could use one of those pump modules, are they forceful enough to shoot out the liquid? Though I would prefer to hook the Arduino directly to a normal spray can. Is that possible?

It depends on your spray can, it may require a very strong servo motor. I'd try a pump, which can be controlled easily and does not consume so much energy.

Maybe you can hack one of those automatic air-refresher-spray modules, like AirWick Freshmatic?

A windscreen washer pump and a motor shield.

A windscreen washer pump and a motor shield. (from AWOL)

Be careful when helping other guys ... you do not know on which side they are on.

I do not expect the guy has negative thoughs.

Howewer, nowadays the bad people are using any sources.

FLAMETHROWER?

arduinoaleman:
A windscreen washer pump and a motor shield. (from AWOL)

Be careful when helping other guys ... you do not know on which side they are on.

I do not expect the guy has negative thoughs.

Howewer, nowadays the bad people are using any sources.

FLAMETHROWER?

Keep taking the meds.

AWOL:
A windscreen washer pump and a motor shield.

Would this work?

Can it be directly controlled by Arduino? Probably not...
Could I use a relay connected to a power source? And control the relay with Arduino?

stupid-questions:
Would this work?
https://www.amazon.com/Priming-Diaphragm-Spray-Motor-Dispenser/dp/B00HR8MS7G/ref=sr_1_3?ie=UTF8&qid=1487530907&sr=8-3&keywords=arduino+pump

Can it be directly controlled by Arduino? Probably not...
Could I use a relay connected to a power source? And control the relay with Arduino?

Shhh...don't tell the bad hombres.