smoke detector can detect cigarette smoke How Sensitive are Detectors to Smoke? – Wynd Technologies, Inc A working test button doesn't

The answer if e-cigs are cheaper than ciggies is a resounding YES

Low priced cigarettes also help keep existing smokers, who would otherwise quit, hooked on tobacco. The campaigners compared pricing data for UK retailers which showed that in the 12 months from December 2023, prices across four versions of the Chesterfield brand rose by between zero and 3.8 per cent an average of 1.01 per cent or 20p per packet of 20 cigarettes

Public education: Research has consistently demonstrated that tobacco-related public education campaigns save lives, promote quit attempts, reduce youth smoking initiation, lower health costs and blunt the impact of tobacco industry marketing

Rodgman A, Perfetti TA (2013) The Chemical Components of Tobacco and Tobacco Smoke 2nd edn

They also say that not being able to display the products and hiding them for sale almost renders a legal substance illegal