Fire Detection, Protection and Suppression Systems No. 3 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition) Progress Indicator: Question 5 of 17 5.  Asphyxiating gases: Choices: Can, in all cases, be tasted, smelled, or seen Cause suffocation Cause the metal parts of an apparatus to corrode Do not produce an oxygen deficient atmosphere