@vincent Hehe, if you think about it for a while, you're probably also guilty of bringing belongings to the toilet, even if you decide to leave the phone in another room. You may have a watch on your wrist. You could wear clothes. And so on.
You do your poopy business, hopefully, wash your hands, and then go on about your life. But it's not like poop particles are selective and just attract to people's hands. 😊
You should probably not do a web search for poop particles toothbrush. 😉