It has to do with the breathability of the shoes.

Feet sweat a lot, and the sebum or dead cells on the feet will combine with the bacteria on the skin surface, which is the cause of foot odor. Moreover, most shoes have high temperatures, are protected from light, and are moist, which are ideal conditions for bacterial growth.

If the shoes are not breathable and the air is not circulated, the odor will accumulate and become stronger, so the breathability of the shoes is very important.

Tips for choosing shoes

1. It is best to buy shoes between 3 pm and 6 pm, because after walking for a day, the feet will swell slightly at this time. If you choose a size that doesn't feel too small, you'll have no problem wearing it the rest of the day.

2. Don’t sit down and choose shoes. When buying shoes, not only the length and width of the shoes are appropriate, but also the size of the internal space of the shoes is also important. After putting on new shoes, be sure to walk, run, and jump; if they are shoes with laces, you should tighten the laces and try again to see if they squeeze or rub your feet.

3. Don’t try just one shoe. About 2/3 of people have different feet. When trying on shoes, you have to wear them on both feet. In the end, you choose shoes based on the size of your larger feet.

4. It’s best not to choose new shoes that may scratch your feet. Some shoes have thicker trademarks inside, the stitching at the joints of various parts is rough, and the leather at the ankles is too hard and has no elasticity. These injuries will not disappear due to extended wearing time. On the contrary, the longer the wearing time, the greater the damage to the feet.

5. Don’t buy fake shoes for cheap. In order to keep costs down, fake and shoddy shoe processors will only produce shoes that look similar to real shoes, rather than using high-quality fabrics used in real shoes. Wearing fake and shoddy shoes for a long time may cause irreparable damage to the feet.

For the above content, please refer to People's Daily Online - How embarrassing is foot odor? 4 tips to easily stay away from foot odor, People's Health Network - Can you choose shoes that fit your feet? What kind of shoes are "good shoes"?