Some of the masks have a strong airtight function, especially like N95 type masks, for people who wear them for a long time, there may be breath-holding and poor breathing. If you have difficulty breathing while wearing the mask, you can take it off when the air circulation is better and there is no other person. For N95 type masks, you need to replace the mask in time when you obviously feel the obstruction of breathing while wearing it. The general public can use different masks in different scenarios. It is recommended to wear disposable surgical masks or disposable nursing masks on a daily basis, which are relatively less airtight and can reduce the feeling of breath-holding.