I use O2 24/7. I have a humidifier on my home unit, not my portable. I haven't had a bloody/bleeding nose but there is blood when I blow it. Sinus pills are not effective. Sinus spray does help but I can't continue that on a daily basis. I've been told to use a thin film of Vaseline. Was also told to try aquaphor. Im new to this whole experience having had an exacerbation forcing a 4 day hospital stay resulting in the 24/7 O2. Difficult to breathe through my nose and don't want to wear a mask. Any help or advice would be appreciated. Thank you.