Toluene is what the last "T" in TNT stands for. It would be a good idea to be careful with it.

When I worked for a well drilling company here, we had a big job at a TNT plant in Chattanooga, drilling environmental test wells. The water under the ground was saturated with toluene and had a sweet smell to it. Of course we had to take the necessary precautions when we drilled down to it. No one was hurt that I know of, but then again, they made us wear rubber gloves, safety glasses and one of those white suits that nothing penetrates. It was fun...