The reasons for fox odor are as follows: 1, and genetic relationship, because fox odor is a hereditary disease, if the father or mother has a family history of fox odor, the chances of the offspring will greatly increase. 2, and the dense distribution of sweat glands are related to the distribution of sweat glands under the armpits, and sweat secreted by the sweat glands themselves have odor, if the distribution of sweat glands is too dense will produce fox odor. 3, pseudo-fox odor, due to recent emotional tension, increased activity will cause a large number of local sweating, resulting in pseudo-fox odor. Pseudo-fox odor, due to the recent emotional tension, increased activity will cause a lot of local sweating, thus causing pseudo-fox odor situation. So when you find your sweat smells bad, you should go to a regular dermatology hospital to clarify the cause.