When Mona is first examining the insect she says it is Coleoptera possibly Archostemata (a suborder of the order Coleoptera). Coleoptera is the correct name for the order of insects commonly called "beetles" (which she refers to just after by saying that the airship terminal is an unusual place for "beetles") and have the character trait of "sheathed wings" from which it gets its name. However, the insect she is examining has neither wings nor sheaths for them but is made up of overlapping segments on the back of its exoskeleton more in-line with the order Blattaria commonly called "Cockroaches" and even though this is an alternate universe the meaning of the Greek words koleos, "sheath"; and pteron, "wing", thus "sheathed wing" and "Coleoptera" would probably not have been different.
When Lincoln uses liquid nitrogen to freeze the lock on the cooler door, it is far more likely that the nitrogen gas he releases would quickly flood the lower part of the cooler and asphyxiate him before he could break the lock.