Boy, am I going to get flamed for this, but I also find the whole community sharing the precious vessel for Our Lord's most precious blood unsanitary as well. I was certainly around in pre-Vatican II days, and I believe I have only taken Our Lord's precious blood a handful of times, like at the weddings of one of my children. Under both forms, bread and wine, Our Lord is truly present, both Body and Blood in each form. I don't think you should feel obligated to receive under both forms, but I know I'm not giving you the theologically correct answer, but hang around, the answer will be thrashed out right here.
I'm not using my flame-thrower here but... :-)
Will you drink from the same cup as your parents or your kids at all?
Actually, you are right and your answer is theologically correct.