YEs, I sure have, but I buy shoes that look like they are pretty new. I never thought about something like foot fungus. Even if someone had a foot fungus, those germs aren't going to last forever. I would think you would be pretty safe wearing the shoes, especially if it is not next to your skin. I mean, who even knows if your new shoes have never been tried on by someone with a "foot fungus." The ones I am wearing right now, are flip flops from the Dollar Store. They are cute, but who knows what kind of conditions existed in those factories, or what they were exposed to. However, I am not worried.