I've had alot of problems with my son over the last few years.
Many gentle hugs. My younger ds started smoking a year ago when he was 20 and I hate it. We lectured, reasoned, etc; unfortunately in his case he was legal age to purchase cigs, we don't buy them for him, so there was precious little I could do. By all means don't make it easy for your ds to smoke - no smoking in the house or on the property, etc. I've heard some go so far as to make their kids strip down in the garage or somewhere and put their clothes in a plastic bag before taking