The deodorant for socks needs a test report. The main components of sweat smell are acetic acid, isovaleric acid and ammonia. As long as the products pass the GB/T 336 10 series standards and meet the requirements of these standards, they will have a certain effect of preventing foot odor. Socks that meet the national standard GB/T 33610.1-2019 can prevent foot odor. In addition, the sock test report shows that the reduction rate of ammonia and acetic acid components is ≥70 and the reduction rate of isovaleric acid components is ≥85 respectively, which can also prevent foot odor. As for the stink of cotton socks, it is related to the material, weave, thickness, how much people sweat, the material of shoes and the air permeability of shoes. Therefore, wearing cotton socks does not necessarily stink.