We all understand that it takes air to make a fire. Even you.
Every truck going down the road with propane, or gasoline, or drip gas, or ethane, or ethanol or whatever in it has a pressure inside that is greater than the outside of the truck. That is the nature of these products. Even the radiator on your car has a pressure that is greater than the outside of it because the water is nearing it's boiling point. If you add air to the truck, you add an a component that is pressureless unless compressed. A component that is not exceeding it's boiling point. I agree you make the truck "more likely" to explode. But it doesn't change the pressure inside the truck. And there is no such thing as "adjetating fuel into the air". If you think there is... then just go on ebay and buy a "fuel to air agitator" :)
You must have never heard of a carburetor on a car. Too young to remember those?
btw, you didn't even use my example of how to correctly spell agitating.