Steam near movie posters?

[comicgenre]

Does it hurt posters to be near steam? I put some stuff up in my guest bedroom, but the bathroom has no door (it's a design element, not anything weird lol). If my guests ever take a bath or I use it, will the steam coming out affect or wrinkle the posters in the frames? Not much choice other than have nothing on the wall in a big room. I learned from experience not to have anything you care about in the kitchen if you're cooking on a stovetop.