Help! found some stuff on my plant!

Okay so i found these weird little patchs on my girls. they kinda look like dust patches on the leafs....

in praying that its not mold. the humidity in the room is perfect.

anyone have this problem b4?
and anyone have solutions to fix it?

Sound just like powdery mildew. Looks like dust or faint paint overspray. 1 part skim milk to 9 parts water and spray the entire plant and do the same a week later.