The first thing I noticed was a change in my blood pressure. I instantly, when I used analogs, felt after the first puff my heart started beating faster. I no longer have that mucous build up in my throat,and as far as smell and taste I look forward to that change. I was also a closet smoker but the evidence of tobacco smell was still apparent on my clothes hands...etc. The fascinating this is I dont drink as much beer,which I believe goes hand in hand with smoking (for me anyway.) Here is the weird part for me, all the time that I tried to quit I always wanted to smoke, now I dont even crave the analog at all. I use a very low nicotine juice (0.6) and I am cool with that. I look forward to my life without tobacco.