Ramadhaan & Fasting

Q: Is it permissible to use an olive miswaak/olive flavoured miswaak whilst fasting?

Q: My mother is due for her eye injection in the month of Ramadan (the injection is in the eye). The doctor advises that she doesn't skip it.  Is it permissible to take it?  Will it break the fast or not? 

Q: I had the niyyah to fast, but I missed sehri and my Fajr salaah.  I was in a state of janabaah. If I woke up to make ghusl is my fast still valid?

Q: I was told that a female who wants to make itikaaf at home should allocate a specific area of her home and make itikaaf there. If she is living in a 2 bedroom apartment, can she specify the entire area of her apartment as her place of itikaaf? Can she also do this for her entire house if she is living in a big home?

Q: Does a nosebleed break the fast if the blood did not reach the mouth, but blood went down the throat through the nose only?

Q: Instead of making up for fasts that I missed due to menses of the past 3 years and last year, can I give fidyah and not keep the fast?

Q: If a fasting person forgets that he is fasting and vapes or smokes a cigarette, will his fast break? If the fast is broken, will only qadha be compulsory or qadha and kaffaarah?

Q: Does the colour of food (caused by spices, etc.) remaining on the tongue invalidate the fast when swallowed?

Q: 

1. If a woman was observing a nafl fast and her haidh commenced after zuhr, can she eat anything or should she wait until maghrib? 

2. Is it permissible for a woman to eat if her fast breaks after zawaal or if it breaks at anytime of the day?