Air pollution from wildfire smoke may cause shortness of breath ... Vance and her colleagues have been testing N95 and KN95 masks in their lab and have found that both have very high filtration ...

Collins’s testing showed that Powecom masks filter out over 95 percent of airborne particles. According to Lang, a respirator mask with a P100 filter is very effective at stopping smoke ...

I would consider wearing a mask.” Adar says researchers have not found evidence that there’s ever a safe level of exposure to the particles found in wildfire smoke. Both Adar and Han recommend ...