if you can smoke tobacco in your apartment it is a fine idea, though less and less of them are allowing it now. incense work well, just light some and let them go for a few minutes before starting, most places dont mind the incense as much seeing as its not really smoking and it has a generally pleasing aroma, but remember its not about the strength of the odor for the incense, even gentle smelling incense can cover the heaviest of smoke sessions. But like everyone here said vape, if smell is an issue, why take the risk, plus if you get the right ones you can even vape incense afterwards to eliminate odors. Also use the cardboardtube + dryer sheets trick, im not a fan, but it works.