Masks are generally recognized as effective personal epidemic prevention measures, but there are still many people who take off or do not wear masks because they are not comfortable enough, which will cause a huge risk of infection. The major reason why they don't wear masks is that they can't obviously sense the existence of the virus and despise the protective effect of masks. Therefore, we put on the "Mask" for the trash can, so that those who do not wear the mask can realize in the process of throwing rubbish: once the "Mask" is removed, the "rubbish" will easily enter the "body".