A health-and-romance-related public service (and public transit) announcement
I can't believe that this is not the first time I have seen this:
Ladies! (Or well-glossed gentlemen.) Don't kiss the windows of your El car or bus. I'm not a medical doctor but I am pretty sure they are not the cleanest things in the world. Plus, not to mention, it's not like the CTA deserves your kisses anyway. Save them for when service markedly improves.