Most tactics they use are ethos showing that a famous person consumes tobacco and you should consume it too. Many movies show most of their protagonists smoking tobacco to show people that they look cool. They use a lot of commercials to show how tobaccos is very addicting and you should try it too. Advertisers try to convey the audience, it's technically psudoscience. Since they don't have evidence to prove that tobbacco is good for you and healthy, but if they did it would probably disturb the consumers.