I brought one of mine in to class with not problem, but then I was and am a college student... I brought strep throat into lab after we isolated strep from our own throats, no one had pathogenic strep in my class. The year before someone found out that she had it that way, the teacher told her to show the plate to her doctor. It was so cool, educational show and tell!
~~Nonpathogenic microbes are our friends~~