If you mean it's difficult to overdose on nicotine through cigarettes, then yes, but I believe just a drop(or a very small amount, at least) of pure nicotine will kill you. It's a poison.
Even if the open windows of science at first make us shiver after the cozy indoor warmth of traditional humanizing myths, in the end the fresh air brings vigor, and the great spaces have a splendor of their own - Bertrand Russell