BEND, OR -- During a briefing with Deschutes County Commissioners this week, Health Director Doctor George Conway said the masks people wear to prevent the spread of COVID-19 aren’t much good when the air is filled with smoke from wildfires. Conway says an N-95 mask that is properly fitted can keep small pollutants from wildfires out of the lungs. He says the very small size of particulates from wildfire smoke can be especially harmful to people with respiratory and other health issues.