Running the car with a damaged air intake hose is risky. In the best-case scenario, it will severely decrease the fuel efficiency of the car. And if the damage is too much, it can damage the engine itself. Replacing an air intake hose is not that difficult. Mostly, the hose uses worm hose clamps to connect to the air filter and the engine. You will be able to remove and replace it with only a screwdriver. When you buy a replacement air intake hose, make sure to buy exactly the same one as the former. These hoses are vehicle specific, and you have to buy a hose that is specifically made for your car.