I find if you really want to annoy a smoker just say in whatever variation "save your life" straight off the bat you've lost them as you sound just like every do gooding anti smoking zealot ever as well as sounding over dramatic and a bit of superior git. For myself I've always got further by talking about how switching stopped that God awful first ten minutes in the morning I used to spend coughing my guts up something every smoker of a certain age will understand. Between the antz, bad media and a growing number of preachy vaper's I suppose a downturn in interest was inevitable, last
three people I aided saw me puffing away outside a
shop I gave them my public email address and went from there.