Prohibition of any item, meaning, making the item illegal to make or possess anywhere, is a stronger infringement on personal freedom and often leads to organized crime stepping in to provide the prohibited item, both of which make it unpopular.
Popular smoking bans generally ban smoking in certain public areas. This does not promote organized crime to sell the banned product, and is less of an infringement on personal freedom.
The proposal to “ban cigarettes” sounds like it would fall under the former category .