My upstairs neighbours smoke cigarette with window close.

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My lungs are extremely damaged and his smoke could even kill me during my sleep

I want to cast a spell on him to make him stop poisoning my air, any ideas ?

(talking to him about it is useless, I also feel he does it purposely to piss me off )

Discussion

[Void-Laughter]

First things first have you notified the landlord about this? This is a serious issue that you should turn to mundane actions for before looking for magickal resolutions.