In the 1960s, I was a child in London, and the double-decker buses still had smoking upstairs. My parents avoided taking me to the top level because of this, but sometimes we had to, and I hated it. I still remember the smell over fifty years later.

As a cannabis smoker myself, I feel some sympathy for cigarette smokers, but more than anything I am glad we are discouraging this extremely addictive and very medically destructive habit.