You are not the only one with the problem. I crave damp cellar smells, coal, fire lighters. I even chew down on the powdered smokers tooth paste becasue it is gritty I dont eat it though, I spit it out. My cravings started out of the blue over 2 months ago and wont go away. I was stood sniffing a pack of fire lighters today in the super market, must have looked like a real freak! My hubby just rolls his eyes! I even visited a mining museum to experience the dank underground musty smells.
I have no intention of eating anything untoward but the urges are becoming a nightmare. I am currently awaiting results of blood tests from my doctor. I am 41 and female, maybe its a woman thing!