Factors that break wudhu

Q: Does cleaning the ears invalidate wudhu?

Q: Does ink stop water from reaching the skin?

Q: If either the husband or wife has ablution (wudu) and they see their partner without covering or unclothed, will their ablution break or not?

Q: Does inserting a tampon break ones wudhu?

If I am a major due to istihadha, and I insert a tampon before wudhu then wear khufain, is masah on the khufain valid for the entire salaah duration or do I have to remove it and wash feet each salaah time?

Q: When a woman using a cotton ball etc. to prevent discharge, is it necessary to remove it & clean oneself before making wudu again if the wudu had broken? This occurs whilst travelling when sometimes the toilet is separate to the wudu area. Must she remove the cotton & reapply it or is she able to just make another wudu?

Q: Whilst making wudu, if a person's wudu breaks by passing wind or vomiting etc., does he have to start the wudu from the beginning again or must he continue from the limb he was washing? 

Q: There is this book called "The Tablespread Of the Holy Prophet" written by Muhammad Faisal

There is a section on cheese. This hadith is a Sahih Muslim Hadith 687, Narrated by Abu Hurayrah (radhiyallahu anhu).

"Performing ablution in the mosque, he said: I am performing ablution because of having eaten pieces of cheese, for I heard the Messenger of Allah Ta'ala say: Perform ablution (after eating anything) touched by fire."

I would like to know what is meant by "touched by fire" and why should we make wudhu after eating something that is touched by fire?

Q:

1. Does leaning against something whilst making dhikr with the eyes closed break wudhu?

2. Does falling asleep on a desk in front of a person whilst sitting on the floor break wudhu?

Q: Would removing an ingrown hair on my leg break my wudhu?

Q:

1. May I know all the different types of vaginal discharges and their wudhu/ghusul/najasah ruling according to shariah? Cervical mucus is a normal part of every girl’s monthly cycle and most days in the month she will normally have cervical mucus. This cervical mucus is of varying thickness, opaqueness and stretchability depending on how close or far she is from ovulation. Is this normal cervical mucus discharge what is called “mazi”?

2. I would like to know if wudhu remains or not if the cervical mucus does not exit the private part — it stays within the lips and you can also feel that there is some slippery/wet cervical mucus INSIDE the lips, but it has not exited the lips yet.

3. I was told that wudhu does not break if the fluid does not exit the lips. However, I was reading behishti zewar (وضوء توڑنے والی چیزوں کا بیان) and here is what it says:

مسئلہ ۳۶: پیشاب یا مذی کا قطرہ سوراخ سے باہر نکل آیا لیکن ابھی اس کھال کے اندر ہے جو اوپر ہوتی ہے تب بھی وضوء ٹوٹ گیا۔

What does this mean? I am still confused about if mazi is the normal cervical fluid.

4. I do not know what a wet dream is.