Before you question about the ruling of smoking in Islam, ask yourself first if you are sincere about submitting to its rules. Ask yourself if you are seeking the truth or merely seeking answers which suits your desire. If it is the latter then don't bother asking.

But I will tell you what is definitely forbidden (haram). It is what you see in the photo attached. This earth is Allah's and it is our responsibility to look after it and keep it clean. True Muslims do not need fines or CCTVs to behave. Nothing is private to Allah.

Btw, here is a tip for those who are genuinely seeking to quit smoking. The late Ustaz Taha Suhaimi (May Allah bless his soul) told us; Not many have the knowledge but everyone has a mind to think. Name one benefit, just one benefit - of smoking. If you can name one, then smoke. If you know there is no benefit, then you have indulge in wastage.

Another point to consider is, how many times have we thank Allah specifically for our health? For our healthy working lungs? And here we are destroying it?

Allah The Exalted reminded us in the Quran Chapter 17 Verse 27;

إِنَّ ٱلْمُبَذِّرِينَ كَانُوٓا۟ إِخْوَٰنَ ٱلشَّيَـٰطِينِ ۖ وَكَانَ ٱلشَّيْطَـٰنُ لِرَبِّهِۦ كَفُورًۭا ٢٧

Surely, squanderers are brothers of satans, and the Satan is very ungrateful to his Lord.

So if we are grateful for our lungs and health, would we “burn” them?

May Allah guide us to what pleases Him, and not what pleases only our lower desires.

Amin.