When we all wear masks, it reduces the amount of particles spreading through the air, and therefore, helps us all slow the spread of COVID-19. Masks trap particles that come out of our nose and mouth and keep them from spreading to those that are near us. If a person is healthy, these particles don’t contain any virus, and wouldn’t make others sick. If you’re sick with COVID-19, your particles could infect those around you. What makes COVID-19 hard to control is that many people don’t show sympt