It's cheaper too.it is better to smoke moulds then to smoke cigarettes
I preheat my molds on a hot plate, while the lead is being melted in my Lee bottom pour pot. I never smoke my molds and only use a thin coat of micro graphite spray on mold release from Frankfort Arsenal on one that gets contrary about dropping the cast (ball or bullet).
Rifleman1776 must have met my grandfather because he told me the same thing back in the 50s.
I smoked them for first use only. And, I did that because many years ago an old timer told me "yer supposed to".