how we re-used and social conventions also play a role. takes what for example it smells bad at least that's what we've been taught that's why some go to great lengths to mask it. the problem is red white obvious but only if you. do have a size question that you've always wanted on say that we're happy to help out send it to us as a video text or voice mail if we answer it on the show we'll send you a little surprise as a thank you come on just ask. you'll find us online at the d.w. dot com slash science and of course on twitter and facebook get in touch. did you know that more organisms live on your skin than they are people on earth does that make your skin crawl it shouldn't we need that epidermal ensemble minute