Both of my boys have sweaty feet. My 3 y.o. had sweaty and stinky feet as an infant. Now it's better and less sweaty but he definitely sweats when wearing socks and shoes. My almost 12 week old has sweaty feet too; but his doesn't smell like his older brother's did as an infant.

I noticed that my LO's feet gets sweatier when he is just hanging out on a bouncer or a swing or doing tummy time. I'm sure he could make a dry tissue really damp if I wrapped it around his feet (which I would never do but just saying!).