Part a - module 21.1 overview of the respiratory system cbrt exercise part 1 an unknown gas has been released into a subway station. victims reported detecting the scent of cut grass, after which they state they began to suffer from "watering" eyes and "runny" noses, a burning sensation in their nasal cavities, mouths, and throats, and difficulty speaking. the symptoms resolved about 30 minutes after the victims were removed from the subway station. none of the victims reported any difficulty breathing during the incident. true or false: based on the victims' initial symptoms, the unknown gas did not appear to affect the respiratory zone of the respiratory tract. cbrt exercise part 1 an unknown gas has been released into a subway station. victims reported detecting the scent of cut grass, after which they state they began to suffer from "watering" eyes and "runny" noses, a burning sensation in their nasal cavities, mouths, and throats, and difficulty speaking. the symptoms resolved about 30 minutes after the victims were removed from the subway station. none of the victims reported any difficulty breathing during the incident. true or false: based on the victims' initial symptoms, the unknown gas did not appear to affect the respiratory zone of the respiratory tract. true false.