Fumigant and pesticide. Also reported as pulmonary chemical weapon
Colorless, non-flammable gas that has no odor except at high levels
Binds to and damages DNA
Neurotoxic, though inhalational injury is most common cause of death acutely
Long term exposure to low levels can affect CNS
Methyl bromide
Blister chemical agents 
Theophylline
Lewisite 
Caffeine
Sulfur mustard 
Pseudoephedrine
Phosgene oxime 