No, they probably don't. People don't know that smoking is the leading cause of erectile dysfunction; or that smoking is linked to penile cancer; or what the actual risks of lung cancer are.
People just know that smoking is harmful, but they laugh that off with "I might get hit by a bus tomorrow".
> Or do you think we, citizens of third world countries are all illiterate know nothings who got tricked by tobacco companies?
It's not about citizens of developing world being illiterate know-nothings, it's about tobacco companies being abusive manipulative arseholes who lie and who have millions of dollars to fund those lies.
Yes, there is a picture of a man covering his genitalia with a thumbs down and a big IMPOTENCE written on the back of cigaret packages:
https://en.wikipedia.org/wiki/Tobacco_packaging_warning_mess...
but guess what - all sorts of biases step in, we like to lie to ourselves, nicotine addiction isn't neglible either. in 2015, this information is world-widely known for years and years (apart from north korea, maybe), but people like to ignore it. somebody gets cancer from smoking? well man up and blame his own stupidity/weakness.