So if someone were to actually sneeze, that air would get swirled around multiple times before it even has a chance to go out through the filter.
بدین ترتیب اگر کسی قرار باشه عسطه کند، هوا چندین بار چرخش کرده قبل از اینکه بتواند از  طریق فیلتر بیرون رود.