A wooden chest of drawers might give protection from AK47 fire, but only if the drawers are filed with boiler plate.
Dogs' sense of smell is literally a million times more sensitive than humans'. When Deeks sprays the thug while they abduct Tuan's mother, his dog doesn't flee from the spray and keeps licking the thug's face, revealing it must be an inert substance.
Translators and translation are mentioned several times. The correct term, however, would be interpreter/interpretation. A translator works with text, spoken language is handled by an interpreter.