Welcome to Techtiles, the only blog about the science of fashion written by me. Come on in. Take a seat. Please do not put your feet up unless you've been wearing anti-microbial socks. Do those things even do anything? you ask. Great question. Kind of, and yes, but only on the first wear. Silver nanoparticle socks do kill your foot germs, but they wash right out of the socks in the laundry, and that wastewater can damage natural ecosystems. More on the topic of germ-fighting clothes later, but for now feel free to use that whenever someone says your feet stink.