call 311 or contact the DOB. Make sure you have the smoke policy of your building to reference. Any residential building with more than three units needs to have one. There’s prob a line in your lease stating the building is smoke free and there should be signs in your building too. Chances are the landlord would get fined for allowing them to do that, which may finally cause him/her to spring into action.

Have you had the chance to speak with your super about this? He or she might know the people and can prob speak to them if you’re not comfortable.