So, imagine you have a car with an engine. In order for that engine to go "vroom vroom", it needs fuel. Fuel makes the engine work, just like how food makes your body work. Now, usually, your car might use gasoline as fuel, but sometimes people add something extra to make it work even better.
Nitrous oxide is one of those extra things. It's a gas that can go into the engine along with the gas, and when it does, it makes the engine work even harder than before. It's sort of like adding extra vegetables to your dinner to make it healthier and give your body more energy.
Now, you might be wondering, "Why don't people just use nitrous oxide instead of gas?" Well, it's because nitrous oxide isn't a good enough fuel on its own. Just like how you can't just eat broccoli for dinner and call it a day, an engine can't just run on nitrous oxide.
So, what people do is mix some nitrous oxide with the regular gasoline to make what's called a "nitrous oxide fuel blend." It's like making a smoothie with a bunch of different fruits - you get the best of all worlds.
When this fuel blend goes into the engine, it causes a reaction that makes the engine work even harder. This can give the car a big boost of speed and power, and it's why some people use it when they're racing.
But, just like how too much candy can be bad for your body, too much nitrous oxide can be bad for the car's engine. So, it's important to use the right amount and in the right way.
Overall, a nitrous oxide fuel blend is just a mixture of regular gas and a special gas called nitrous oxide that makes car engines go faster and stronger.