I have never worn socks with sneakers or any footwear-they just do not feel good & are too hot and stifling, in addition to being too time-consuming to keep cleaned & sorted. In summer, sneaks get too hot & sweaty with or w/o socks, so I wear sandals then. Mild spring & fall days are perfect for sneaks, mocs, clogs or loafers sockless, when it gets too cool for sandals. Cold weather is the perfect time for fleece-lined boots sockless if I am going to be outside for extended periods. Odor is not an issue unless the same pair is worn every day which I avoid doing.