Senoufou, in reverse order:


"What about dry ice? The stuff they use in theatre pantomimes. Non-toxic and provides an air of mystery and magic" - dry ice is frozen carbon dioxide which is toxic to air breathers;

"We sometimes go to a huge branch of Asda in a rather poorer district of Norwich" - do you travel by motor vehicle? Is it fuelled by diesel or petrol or by batteries which use noxious chemicals in production?

I don't see why I should be forced to inhale toxic chemicals (and there are these even in vapour, though in smaller amounts than cigarette smoke) as I walk about. Nor do I wish to smell strong odours of various vaping flavours. I want my air clean and unpolluted thank you" - yet we should suffer your use of motor vehicles, the use of motor vehicles that deliver to the Asda store that you use, your use of gas and electricity which also produces greenhouse gas and so on.

In the grand scheme of things, a minority of smokers or vapers cause less social and ecological harm than you do.