YES, smoking addiction is demonic. Learn about it here https://www.demonbuster.com/smoking.html.

If you are a smoke addict and a Christian, keep reading. I was addicted to smoking about 20 cigarettes / a packet a day for over 30 years. After being called back by the Lord Jesus I could not see anything wrong with smoking and I loved that. I new there had been no chance for me to stop it by myself. I used to sit and smoke while reading the bible and it lasted a good few years. I did pray about it and the Lord would send me dreams showing me that it was sinful but still there was no chance for me to stop until the Holy Spirit told me to search for information what it means for Christians to smoke and how God sees smoking, is it displeasing Him or He does not care about it at all. I was very strongly drawn to deliverance ministry at that time and I knew I should not smoke and cast out demons at the same time. Somehow I knew that.

When I started searching for true knowledge about smoking from God’s perspective, I had found that website with the link above and I found it shocking. Very strong conviction came upon me. 2 days later, deliverance minister prayed for me and cast out a great amount of demons connected with smoking. It lasted about 3 hours and was very powerful, shocking battle. The Lord delivered me completely and I have not smoked since that time which was in 2012. After that deliverance I had no desire to smoke anymore, no battle and no more longing or cigarette craving. Complete freedom. Praise the Lord!

If you are still struggling like I was, have a look at that website and learn what smoking means for you and for the Lord. There is freedom in the name of Jesus. Do not submit to the desire of our enemy who wants to destroy you in man various ways including by smoking.