The stern angelic guards on Noori Azkaar are called Alvi Moqileen! Incense is very beautiful thing, but if the zikr that the person is doing turns into Zakat e Amal, unintentionally, then whatever the moqileen of that Zikr are would definitely have a presence. Now, its not necessary that the person may be fulfilling the conditions of Zakat e Amal, because he won't even know it, so it may affect other creatures in negative way, like they may feel chains in their necks and being dragged to the one who is doing that Zikr, so if the conditions of that unintentional Amal aren't met, harm is certain. As far as plain simple recitals, and Azkaar are concerned, yes, its excellent. All the Noori Things like incense! By plain and simple Zikr I mean Salah, or one time plain recital of a Surah Mubarik. Pl note, its not necessary that the person would be always invoking on an Amal unintentionally, so the changes are rare! The rule is go plain and strait, unless you know what you are doing.