Most contemporary scholars and medical councils hold that smoking is haram, because of its proven harm and the command not to destroy oneself (4:29, 2:195) and that the Prophet ﷺ made lawful only the good things (7:157). Some earlier scholars, before the harm was known, called it disliked (makruh). Today the harm is clear, so avoiding it is the safer and sounder position.
Yã ku waɗanda suka yi ĩmãni! Kada ku ci dũkiyõyinku a tsakãninku da yaudara, fãce idan ya kasance, daga fatauci ne, bisa yardatayya daga gare ku. Kuma kada ku kashe kãnku. Lalle ne Allah Yã kasance, game da ku, Mai jin ƙai ne.
"Waɗanda suke sunã bin Manzo, Annabi, Ummiyyi wanda suke sãmun sa rubũce a wurinsu, a cikin Attaura da Linjĩla.
This is general information, not a fatwa. For your own situation, ask a qualified scholar.
Questions about halal and haram
Is smoking haram?
Most contemporary scholars and medical councils hold that smoking is haram, because of its proven harm and the command not to destroy oneself (4:29, 2:195) and that the Prophet ﷺ made lawful only the good things (7:157). Some earlier scholars, before the harm was known, called it disliked (makruh). Today the harm is clear, so avoiding it is the safer and sounder position.