A. Training: (1) Sources and types of smoke and fumes on board aircraft. (2) Odor and visual descriptors to allow an individual to recognize the presence of oil and hydraulic fluid fumes and other potentially hazardous fumes, such as fumes relating to hydraulic fluid, engine exhaust, ground service vehicle exhaust, fuel, de-icing fluid, and ozone. … More S.1626 Cabin Air Safety Act: