All perfect praise be to Allah, the Lord of the worlds. I testify that there is none worthy of worship except Allah and that Muhammad, sallallahu ‘alayhi wa sallam, is His slave and Messenger.
It is obvious from your question, dear Sister, that you suffer from excessive Waswasah (whispering). You should treat it by disregarding such whispers completely, not thinking or asking about them, and imploring Allah to grant you safety from them. As for trying to treat Waswasah by pursuing Fiqhi solutions, it is not a remedy for Waswasah and does not help in overcoming it.
We do not know which fatwa you are referring to and whether you understood its meaning correctly or not. However, what we have underlined previously – in our Arabic fatwas – is that removing dust from the Mus-haf (physical copy of the Quran), let alone religious books, is not an obligation, and the person bears no sin for not removing it. It goes without saying that such an act is absolutely not Kufr (disbelief) with greater reason.
The fatwa reads:
“An aspect of glorifying the Book of Allah, the Exalted, is to wipe the dust off the Mus-haf. The research papers of the Council of Senior Scholars cited the following quote of Ibn An-Nahhaas: ‘Chapter on the religious innovations seen in the mosques: they include writing Quranic verses on the walls of the mosque. According to our school of Fiqh, this is disliked because it exposes the Quranic verses to dust. Al-Haleemi explicitly said in his book Al-Minhaaj that part of glorifying Allah and glorifying His Messenger is to remove the dust from the Mus-haf and Sunnah books.’” [Tanbeeh Al-Ghaafileen]
Therefore, the questioner and all Muslims should show respect for the Mus-haf and wipe the dust off it to the best of their ability. If one refrains from doing so, the most likely correct view is that he bears no sin for it because he is not obliged to do so. Moreover, it is hard to avoid dust, it is not considered filthy in and of itself, and it usually covers books. Were the Muslim obliged to wipe the dust off them whenever he sees dust or bear a sin if he does not, this would have incurred enormous hardship on him.
Thus, you come to know the religious ruling on all the sub-issues which you mentioned in the question and realize that you should not pay any attention to them in the first place.
Allah knows best.