Impurities on clothing and furniture

Q: If a small amount of najaasat eg. blood the size of a fingernail falls on the garment, then does the garment need to be changed or can you make it paak by washing it 3 times?

Q: It was raining outside, the sole of my shoes were wet, they touched the top part of my other shoe. The shoes are made of absorbent cotton material. I understand that doubt cannot uplift certainty. But I know that I must have stepped on some kind of najis some where so I think the top part of my shoe became impure, but even if I did there was no trace of it. Also before I stepped on my other shoe I walked for a bit on wet ground, would that have cleaned up the sole of my shoe? I suffer from waswasas as well.

Q: I washed my clothes in the washing machine, one item of clothing, a raincoat which is made from waterproof material came out dripping a bit, but the rest of the clothes were wet but not dripping. Are my clothes clean still?

Q: If a dog licks your shoes does the shoe become impure. If you wear it or if the shoe touches you will you become impure? Also after someone rinses their mouth after drinking alcohol, will his mouth be pure?

Q: Someone wears slippers with pigskin soles. If he now takes off the slippers and walks on a carpet, does the carpet becomes impure? The person was wearing socks with slippers that were not wet, but as you know the socks get kind of humid/ from feet heat when wearing/walking. Does such dampness (without actual wetness) transfer the impurity or must it be real wet?

Q: A person who wears shoes with pig leather lining. If his socks become moist due to sweating are the socks impure?

Q:

1. If after consuming alcohol a person drinks a soft drink and then drinks water from the bottle, can we render the water pure to consume.

2. If a family member is alcoholic how can a person keep pure for prayers as far as utensils and house is concerned. Does he have to keep cleaning?

Q: Should we consider the toothbrush of a person who drinks alcohol impure if it is kept with our brushes? Do our brushes become impure?

Q: I m suffering from an illness of urinary dribbling (urine drops coming out). I want to ask you that if I am out of my house and after urine I feel urine drops, can I wash the affected area of cloth with water for Namaz or I should have to change clothes for Namaz?

Q: I have asked this question before but I was still in some doubt. I live in a country where people openly drink and if my friends and all use my glasses and spoon after drinking should I consider them impure. I'm getting paranoid over this issue. Also if after drinking they have eaten or had drunk water and then they use my utensils will they still be impure. When we wash impure utensils in sink we usually don't see any impurity but it's just water that splashes from washing. Should we Consider that water impure. A dry particle from private part discharge fell on carpet. The carpet was dusted where that particle probably fell on floor The floor was then mopped. Should I consider the floor clean or is it impure as it was mopped. Due to this I cannot pray.