If the carpet pad is dry within 24 hours, the likelihood of microorganisms and mold is significantly low. Without completely drying your carpet padding, your carpet will start to smell, and mildew may develop.
The padding under your carpet is similar to a sponge, so it soaks up moisture. Although drying your carpet subfloor isn’t easy, it’s possible. Failure to completely dry your carpet materials will likely cause more problems in the future.