Simply because the process of extracting the cocaine involves a solvent - often cheapest to hand is diesel. As most cocaine is badly washed (chemically) you often get a hint of the solvent used - toluene, petrol, xylene, diesel etc.
Better solvents cost more - and are easier to spot large amounts being purchased and stored. Few will bat an eyelid if someone orders a few hundred gallons of diesel - especially if there is a generator / tractor / similar nearby.
If the impurity is left behind in the cocaine, it will often remain in it after it has been treated freebased into "crack".
All this and the most exciting drug I take is a pint of Old Peculiar or a glass of Remy :)
IS cocaine like crack
You can't snort crack. I mean, I suppose you could try. But that's not how people do it. Regular cocaine can be snorted OR smoked, but crack cocaine is only smoked. It was actually invented to be an easier-to-smoke form of cocaine.
ewwie
No, it will not. Crack is simply cocaine prepared with baking soda in a way that makes it smokeable so a drug test performed on someone who has taken crack and someone who has taken cocaine will return the same chemical signature.
some websites suggest that you can crush up some types of pills and cook them like the cocaine. They call it ghetto crack.
no
Plastic...
Crack cocaine typically appears as small, rock-like crystals that range in color from off-white to pale rose. It is commonly broken into small pieces or "rocks" before being smoked.
It loks like a snail o crack cocaine.
Crack
They are saying you're acting like your doing drugs. (crack/cocaine)
Dutch Cleanser does the trick!