ΔE 23.5, loose: different enough that you should pick on purpose. Lustful Purple is a little darker, much more saturated than Smoke.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Lustful Purple is a little darker, much more saturated than Smoke.
The same difference applies the other way round: Smoke is a little lighter, much more muted.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Smoke on the colour wheel See Lustful Purple on the colour wheel
All matches: Smoke equivalents · Lustful Purple equivalents