Though it looks like white mold, it’s not inherently dangerous ... towards and out of the porous surface (to your inner basement wall), it carries the salts along. Once the water evaporates ...

Does your basement have white, fuzzy stuff showing up on masonry ... This problem might look like mold, but it’s probably something called efflorescence. And dealing with this issue depends ...

White vinegar is yet another odor-neutralizing ... First, poke around for any leaks in the basement that might lead to mold ...