Factors that break wudhu

Q: Does mosquito sucking one's blood break wudu? 

What if the mosquito took so much blood that if killed, the blood would flow?

Q: I have some questions regarding laughing aloud (such that another person can here you) in salaah. I have seen multiple views and do not know which one is correct. 

1. Can you touch the Quraan afterwards (i.e. is it hadath or not)? 

2. For those who say it is for reprimanding the person, not hadath, according to them can you make tawaaf with that wudhu, or is tawaaf similar to salaah therefore tawaaf is invalid with that wudhu?

Q: 

1. If one falls asleep without leaning on any structure, is the wudhu still valid? 

2. Also, what if you remember that you had a dream?

Q: I have a problem of bleeding gums. The bleeding occurs anytime during the day or night. Sometimes I am unaware of it and other times I spit and rinse my mouth when I get taste in my mouth. My questions are 

1. How do I maintain wudu in this state? This is causing me to perform wudu multiple times sometimes. 

2. How do I fast? I try my best to rinse my mouth continuously when I am awake to avoid swallowing. But I am worried about when I am asleep and don't know if I swallowed or not. 

3. If my fasts are becoming invalid what is the kaffarah I need to pay? Should I pay for all the previous Ramadans because I am not sure about when I started suffering from the bleeding gums problem.

Q: If due to an eye allergy or tiredness the eye is burning and watering, will the wudhu break? 

Q: I have a lot of whiteheads on my nose. From what I know these are clogged pores. After ghusl, because of the heat of the shower, the white heads and clogged pores comes closer to the surface of my nose and I can brush some off with my hand. It's not watery. Does this break wudu like pus would? Or does it just count as dirt of the body.

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?