I've decided that when you marry a smoker, it's the same as marrying a sky driver or a race car driver.
Assuming your partner enjoys smoking of course, which many do. You both know the risks.
For example, smoking 13 cigarettes = 1 skydive in micro morts.
A micromort (from micro- and mortality) is a unit of risk defined as one-in-a-million chance of death.