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Sure it happens

However, relative to never smokers, former smokers' risk remained significantly elevated beyond 5 years after smoking cessation.......This study found that compared with current heavy smoking, smoking cessation among former heavy smokers was associated with lower CVD risk within 5 years of cessation, reaffirming the cardiovascular benefit of smoking cessation demonstrated by others8,10-12,27 but also revealing a slow ensuing CVD risk decline over decades (Figure 2)

While not particularly complicated electrics I'm not sure I'd recommend it as a DIY job to someone unfamiliar with electrical work in general - the upside is that any auto electrician should be able to do something like this for you in less than an hour

1 Those wanting an alternative to smoking tobacco now have a choice of several different types of inhalable nicotine products that avoid burning tobacco or producing smoke