Anybody curious about the topic should check out the Legacy Tobacco Documents Library:

https://industrydocuments.library.ucsf.edu/tobacco/

I once happened to meet a researcher who spent some time with the data set and they had all sorts of horrific stories about how consciously evil the cigarette companies were. The one that sticks with me is the people planning marketing campaigns for mentally handicapped adults. I had no words. I still don't, really.