<qa>  What is the name of the group that will undergo the repeated cue exposure procedure?The investigators hypothesize that smoking quit rates on the patch will be higher after CET. To address our hypothesis the investigators first want to develop a proof of concept procedure that demonstrates that repeated cue exposure in the laboratory results in the lessening or extinction of cue-induced craving. In addition, the investigators are interested in the contribution of nicotine withdrawal to cue-induced craving. To this end, the investigators propose to include a control group without nicotine replacement i.e. placebo patch that will also undergo the repeated cue exposure procedure. 