The outside smoking area Orlando Airport is the only place where you are allowed to smoke on airport grounds. Smoking is not allowed anywhere else at the Orlando Airport except smoking area Orlando Airport.
The smoking area Orlando Airport is not there inside the terminal building but it is outside on Level 1 (arrivals) as well as Level 3 (departures) across the street from Corridore A, B, C, and D2.
Smoking at Orlando International Airport is governed by the Act that is the Florida Clean Indoor Air Act (FCIAA), which prohibits smoking in most of the public places and workplaces. The FCIAA also bans smoking within 20 feet of any gateway or exit of a public building.
Yes, you can find cigarettes at the complex of Orlando International Airport. There are several shops like Hudson News and Duty-Free Americas that sell tobacco products at MCO.