There are some misleading ads nowadays. These ads can have negative effects and can be very harmful to people, especially young people. Let's take the ads relating to tobacco in the United States, for example. These legal but addictive drugs have the potential for great harm to people, but continue to be advertised widely in the United States, especially for the youth market. 
Many years ago in America, "The Marlboro Man" became an image of the rugged individualist, a cowboy who could fight all of the odds that life and nature provided him, riding his horse on the western frontier, while enjoying a really good cigarette. Virginia Slims cigarettes became a symbol for women, with the slogan, "You've come a long way, baby."
Today, in the United States, tobacco can no longer be advertised on radio or television, most public buildings ban smoking, young people must be eighteen to buy cigarettes or other tobacco, and all printed ads or packs of cigarettes must carry an ominous health warning such as "Smoking can lead to serious health risks and can cause early death. " or " Women who smoke while pregnant may cause their babies to have serious health defects."
The tobacco companies in the US state that they are not seeking the youth market through their ads, but this is a lie, as it is well known that if one becomes addicted to tobacco as a youth, one is more likely to continue using tobacco as an adult. Still, the ads continue to target and attract young people, as providing an exciting or glamorous life by using tobacco.
There are many examples of ads with negative and harmful effects, but the tobacco ads in the US remain among the most misleading ads available to young people.