(first of all I am not the Canadian Massage Therapist that had no originality and stole my psuedonym from another online post) Secondly, if you go into the movie theater and touch any part of your seat, handrail, the napkin dispenser, concession counter, soda cup, candy box or even the popcorn butter pump you have defeated all the efforts you placed in washing your hands (did i mention your handling of your ticket stub?). If you really want to avoid communicable diseases in public situations then take your vitamins and eat right. Keeping your body healthy and your immune system in optimum shape is the only way to avoid infection to which you might succumb. The point being that a little bacteria and viral contamination helps keep up the white blood cell count and therfore a postive defense mechanism.
And ladies if you place your purse on the floor, or even hang it on the handle of your bathroom stall...what is the point of ruining your heels and your balance by using your foot to flush?
Paranoia will destroy ya'. Get tough, be smart and above all...cough or sneeze back at the asshole who refuses to cover their mouth.