alot of strains give off fruity smells...norhtern lights, White widiw...skunk crosses...etc.

I took a closer look at your pics...sorry, but 1st time.

it appears that only fans leaves are yellow, which means they are using the nitrogen stored internally, good.
brown pistils are just an indication od maturity...they will almost all be brown as the plant reaches finish.
Do you have a scope to look at trichomes? 12 bucks for 60-100X's pocket microscope at radioshak...peace