smell

Q: Is it necessary to perform wudhu after smoking a cigarette or wudhu will not break?

Q:

1. I was wondering if the pillows that have been stained by the smell of madhiy through clothes but not directly stained by the moisture itself are impure? (There's no smell on them anymore). I just embarrassingly knew about madhiy this week and I'm trying to repent and avoid sinning thoughts. I masturbate quite often using my pillows before and I'm worried about other things that could have been stained by the smell from the pillows. 

2. I haven't washed anything on my bed and I'm still using them for sleeping and I couldn't possibly wash everything as I don't know which thing could also have been stained by the smell. As they are no visible traces of impurity, I let them dry under the sun is this okay?

3. And I'm also having doubts as sometimes when my feet and hands are wet I get on the bed and I'm wondering if my feet and hands become napaak? My indoor cat also loves to lay on my bed and walk around the house, does this mean I have to wash her?

Q: I'm professionally a mechanic and I work with diesel. When I am going to pray that diesel smell on my hand, and I can't take shower until I finish my work, is my wudu and salah acceptable?

Q: I came to know that wearing half sleeves shirt while performing Salaah is Maqrooh. I want ask that I go for squash daily from asr to maghrib so I wear half sleeves so I can play and it is very difficult to first pray in full sleeves than go back home and prepare for Squash. I also want to know that as squash makes you sweat, so can I pray in sweaty shirts as well as half sleeves?

Q: When fasting, while driving in my car, I get the smell of sugar cane coming from outside the car on the road, does this break the fast?