Nutrine and Spanish Garden have unscented formulas, too. I have used the scented ones, though. Just follow it up with a really loud conditioner like Nature's Gate Herbal Conditioner, Aubrey's GPB or Island Spice or a mint or tea tree conditioner.
I also spray Lysol Disinfectant Mist Away Daily Shower Cleaner on my shower curtains and light a candle in the bathroom when I'm done.