First of all, find the water leak. Generally, there are circular rubber mats on the floor of cars for drainage. After finding them, there are at least four rubber pads sealed with glass glue. Take down the carpet, clean it and dry it, otherwise it will be moldy and the smell will not be treated, and it will have to be replaced later.
You can go to the car wash shop and use a high-power waterproof vacuum cleaner to suck up the water as much as possible. Then, open all the doors and expose to the sun until the carpet is completely dry. Generally, there are no important lines under the carpet, and the vehicle chassis is also rust-proof. As long as the carpet is completely dry, it will not cause any harm to the vehicle.
You can also remove all the seats, and you can completely withdraw the carpet, take it to the bathroom for cleaning and then dry it, so as to prevent odor after exposure in the car.
During the above operation, the fan can be used to blow air to accelerate the air circulation, thus promoting the rapid evaporation of water in the car and air drying.