noob fermentation questions

[Comic Book Guy]

I'm going to be making a sugar/tomato paste/yeast/water wash, but i still have a few questions.

1.How low is the minimum temp before yeast dies? I know it takes a lot longer at low temps(15deg takes 2wks according to Tony's site). It gets pretty cold where I am, and I want to know if I have to ferment it indoors.

2.What kind of smeel does this wash put off?

Thanks in advance!