I suggest you do not put a kleenex box on your desk Put it in another spot faraway from your desk so when the students need a kleenex, they are not bringing the germs directly to you. I also put a garbage can and waterless soap back by the kleenex, and I teach them in the beginning of the year to wash their and throw away their kleenex right there. You may go through a lot of kleenex, but stay healthy and so do the kids. I suggest reading First Day of School by Harry Wong. He has wonderful advise, especially about getting a routine for your students right away.