Impurities on clothing and furniture

Q: Yesterday I was having doubts while I was painting my parents house about the paint brush. Today we had half left and when I searched the internet, i found that the paint brush was made from animal hair and it's non halaal. My family members are painting with it before I told them it's najasat because I just found out a moment ago and not yet told them. I have mixed the paint with the brush. Does my house become naajis and what do we do with the remaining paint? If I touch the house with wet hands, does the najasat transfer? This is very distressing. We have thrown the brush but the paint is still left and on the wall. Now must I throw the remaining paint away?

Q: If alcohol fell on my feet and shoes by accident, what should I do? Is ghusal necessary?

Q:

1. If I have filth on my clothes less than a dirham size and my clothes get wet from the filth area, does this increase the filth size?

2. Can I pray in those clothes?

Q: If mazi comes out on underwear then how many times must you wash that area for it to become pure?

Q: I have a question regarding washing a place that is najis. I usually can see when this particular thing falls on the toilet seat but I know some water did flick off my hand when urine was on it. I washed the inner half of the seat, but was doubtful if it had gone onto the outer edge of the seat. I can usually see it if it falls on all parts of the seat, but because the seat didn't have anything on it I am still doubtful that it may have flicked onto the edge of the seat. My thigh also touched those places thats why I'm worried if it transferred onto me. I also saw something flick off my hand, but cleaned the floor because it felt like it hit the ground and not the seat. All of this is putting a lot of doubt in my mind? What should I do?

Q: If a dog licks my shoes, is it necessary for me to purify them the same way I have to purify my clothes when there’s an impurity of them?

Q: Can the dried urine of a 7 month old child on a bed make the parents clothes 'napak'?

Q: If I was in the bathroom and mistakenly I stepped on my pants I was wearing, do my pants become napaak? Do I have to change my pants?

Q: If I see white discharge the amount of 1 dirham after performing salah, should I repeat my salaah?

What should be considered as najasat, only the white discharge or both white discharge and the wet part around it?

Q:

1. I was in my mother's house and my son urinated on my mom. My mum dried the urine with a tissue and mopped the area once. Then she washed my son just by wiping him with wet hands. I feel that he has not been cleansed properly. I brought him to my house immediately because wherever he touches with wet hands will become naajis since I still didn't wash him properly. The areas that he touched with his hands became naajis, so do I have to wipe that area that he touched also?

2. There are soiled urine clothes. Previously I used to wash them in a bucket 3 times but I don't squeeze the water out. Must I wash the clothes and clothes dryer rack again or will just wiping the clothes dryer rack suffice?