evidence: One of the coolest ways to stimulate these meridians is to put an onion slice inside your socks (at the bottom of your feet) and wear them to bed. It can give off a stinky, pungent smell but it really works. [...] - Place the onion slice in your socks (under your foot, like a platform), and sleep as you usually do. [...] The onion-in-the-sock cure is a popular home remedy, but there is not enough scientific evidence to support it. Experts do agree that eating onions has health benefits. Onions applied topically, however, are not a medically validated remedy. Putting onions in socks to treat illness is an interesting idea at best. But remember that this is more of a home remedy than an established medical procedure. You can try it for fun, but it is not reliable for serious medical issues.