In general, it is safe to try on underwear in underwear stores. Because underwear is not like some close-fitting clothes, such as underwear and socks, it does not need direct contact with the skin, so the possibility of infectious diseases is relatively low.

But when trying on underwear, you still need to maintain certain hygiene habits. Here are some suggestions:

1. Make sure the underwear is clean: before trying on the underwear, check whether the underwear is clean, free of stains and odor. If the underwear has obvious stains or odors, you can ask the clerk to replace or clean it.

2. Pay attention to personal hygiene: before trying on underwear, keep your hands clean to avoid underwear being infected with bacteria or viruses. At the same time, try to avoid underwear being exposed to the air for too long to avoid pollution.

3. It is best not to try on other people's underwear: trying on other people's underwear may have health risks, because different people's physical conditions and hygiene habits may be different, which may easily lead to the spread of diseases.

In a word, it is very important to keep proper hygiene habits and pay attention to personal hygiene when trying on underwear. If you have any questions or concerns, you can ask the clerk for advice and help.