When I had a SMC kit installed I could smell it and it would be a fairly strong smell. (I gave up on the SMC kit....all the issues have been raised on this board. I've been toying with the idea of giving another try w/ Razor's set-up)
For the smell....i was adding some grape scented alky top-end lube to the alky tank. It smelled "fruity". You can get the top-end lube "flavored" or you can just buy the "scented" w/o lube. Alcohol dragster drivers add this stuff to their fuel. Available at local speed shops or thru Summit/Jeg's.
John