having crazy bad luck with the car lol.. it was a decent amount, took napkins and soaked up excess. then i took a leather cleaner wipe wiped the seat down. took microfiber cloth and some water, and dabbed it. looks good, worried about it smelling. coffee had milk in it, suggestions?

Take a steam cleaner, place a microfiber tower over the cleaning brush/head to pick up any stains. The heat will deactivate any smell and very important to use a leather conditioner as the steam will strip away any that was put on previously.

Be careful since there are electronics in that seat and you don't want to damage/destroy them.