Mad Men "New Business" episode-where'd all the smoking go?

Don Draper actually smoked
only one cigarette in Sunday's
episode of Mad Men. The celeb
photographer Pima, (played 
by Mimi Rogers) also had a 
cigarette; but the nicotine cloud
fest they had in the early days 
of the show has toned down 
quite a bit. Perhaps it had to do 
with the Surgeon General's 
1965 findings or todays FCC 
rulings that curtail and vilify
smoking on screen. It was a 
strange sort of refreshing and 
a long ways from when it began
with "Lucky Strike...it's toasted!"