So Titan is very cold and probably has/had storms and perhaps methane rain with lakes of hydrocarbons at one time. What do we call this atmosphere? Exotic, corrosive? I think exotic right now.
http://seds.lpl.arizona.edu/nineplanets/nineplanets/titan.html
http://seds.lpl.arizona.edu/nineplanets/nineplanets/titan.html