Is a person considered sinful if afflicted with Obsessive-Compulsive Disorder (OCD) and fears transmitting infection to others, and what about reliance upon God in this situation?

We advise you to ward off the whispers of fear by remembering that what was destined to befall you could not have missed you, and what was destined to miss you could not have befallen you, and that everything is by divine decree. Diseases do not transmit by their nature; rather, Allah makes them a cause. These feelings are from Satan, who wishes to grieve the believers. Strive in obedience to Allah, ask Him for well-being, and seek refuge in Him from all evil, while having a good opinion of Him and relying on Him, and dispel these whispers from yourself. What Allah has decreed will be, so take the easy precautionary measures, and do not burden yourself with what is difficult. Persevere in reciting dhikr, such as: "In the Name of Allah, with Whose Name nothing on earth or in the heavens can cause harm, and He is the All-Hearing, the All-Knowing" three times in the morning and evening; and the morning and evening dhikr like reciting Surah (definition) Al-Ikhlas (definition) and the Two Mu'awwidhat (Surah Al-Falaq and Surah An-Nas) three times; and saying "Allah is sufficient for me. There is no god but He. In Him I put my trust, and He is the Lord of the Mighty Throne" seven times in the morning and evening; and performing four rak'ahs of prayer at the beginning of the day.