What is a type of fungus that affects plants or grows on inanimate objects, but does NOT cause human infections in the salon?

Mildew

Explanation:

Mildew is a type of fungus which can be characterised by its white or grey colour when it grows. The mildews grows on the organic matter and require moisture to flourish.

The mildew species are mostly known to affect various plants and economical crop but few cases are known which indicated that they can cause infections to human as they can to itself.

Therefore in given question since the fungus does not effect the humans are known as Mildews.

Thus, Mildew is the correct answer.