It's all very subjective - I think pot, unlike tobacco, smells rather pleasant, better than mangoes. But even so, I'd be against banning mangoes. Mind, they probably have been, or are, illegal in some places - that applies to most things it seems.

Someone should come up with an index of what's been banned and where. There's very likely one anyway, somewhere on the net. Morris Dancing, Mince Pies and statues of Christian saints(Puritan England); music generally, and statues of Buddhist saints (Taliban Afghanistan); alcoholic drink and women drivers (Saudi Arabia); anyone driving on the roads without a man with a red flag walking in front (Victorian England); having a drink in a pub when you're under 21 in various places in the States...