Factors that break and don't break the fast

Q: I had used an inhaler (pump) just before subh saadiq. After subh saadiq, I got a taste of the liquid medication in my mouth. Is my fast valid?

Q: Is it permissible to apply oil to the scalp or body while fasting?

Q: Will the fast break if sperm comes out while urinating?

Q: Would it be permissible for a female who needs to use a disposable catheter to use it while fasting, if she needs to use it due to medical reasons. The catheter is inserted into the bladder, using a lubricating gel.

Q: I have an eye inflammation which requires me to use eye drops five times a day. Will it be permissible to use it while fasting?

Q: Will it invalidate one's fast if saliva is found on the lips and one licks the lips? Does the ruling differ if saliva is found outside the mouth?

Q:

1. If a woman inserts dry tissue into her private parts to prevent discharge from breaking her wudhu, does her fast break?

2. If a woman puts water inside her private parts just at the front to clean discharge which if not cleaned would cause her to become Ma'zoor, does her fast break?

Q: Is it permissible to sit in a room which has a humidifier on whilst fasting if there is only water in the humidifier?

Q: In Ramadhaan, when I wake up in the morning after sehri and performing fajar (for example 10 am). I always have a blood and it's taste in my mouth and I'm sure that it must have entered in my throat. What should I do for this because this is something impossible for me to control. And if this breaks fast then it means I have to repeat all my fasts. This problem is continuous with me. I cannot even make up previous fasts.

Q: A person has a sore in his nose. He applied Zambuk in his nose whilst fasting. Is his fast valid