Ramadhaan & Fasting

Q: Does touching the private parts and pubic hair break the fast?

Q: I like to ask you about fidyah. 

1. If you can't fast in Ramadan because of ill health, do you need to give fidyah for 30 days? 

2. Do you need to give fidyah to one person or more than one persons? 

3. Can I give fidyah to a charity organisation then they may distribute it?

Q: Is it permissible to wet the miswak before using it while fasting? 

Q: If I make intention not to fast this Ramadan because of bad health and I pay fidyah, can I still try to fast 1 or 2 days in Ramadan? 

Q: My question is related to the validity of the fast. 

While doing my Kaffarah, I was cleaning my home and dusting off some shelves on the 58th day out of 60 days. Some dust flew in the air and I inhaled it. I looked the issue up in Maraqi al-Falah and it said in the chapter of that which does not invalidate the fast, "dust or smoke alongside smoke from wood or incense entering one’s throat without one’s doing". 

Here, it is mentioned, that smoke and dust which is inhaled by ones own doing will invalidate the fast. Does the aspect of causing it oneself only apply to smoke or does it apply to dust, too? 

Is the scenario I described classed as deliberately causing it myself? Do I have to restart my Kaffarah because of the fast becoming invalide or is the fast still valid?

Q: Is it permissible to do voluntary fast on Fridays in addition to the Mondays and Thursdays?