My truck smells like french fries. I use B100 BioDiesel in my 97 Dodge Ram Turbo Diesel, and it loves it, and folks are always telling me, your truck exhaust smells like french fries. And of course if I use Biodiesel made from used donut cooking oil, then my exhaust would smell like donuts.
When I go to buy Biodiesel in Berkeley, I go a tiny bit further and end up at Blue Sky Bio Fuels in Oakland who is the source of much of the Biodiesel sold in the San Francisco Bay Area.
Life is good.