Unless you're comparably conductive as a few ohms of resistance wire, you got not much to fear.. well, burning yourself is plenty enough. Even if the heating element breaks, the plastic housing is good for 120V. If it don't work, stop using it. This isn't Brazil. If it wasn't safe, I wouldn't be able to buy it. Heck, I can't import a 6 mW laser.
You know what scares me? Cheap extension cords. If the insulation breaks, you can be the resistance wire. Or they can start a fire. Anything passing 500+ watts, I know the electricity doesn't care about me so much, unless I'm soaking wet and standing on concrete. Scariest? Christmas lights. I hate em. GF loves em. 100's of feet of stupid thin wire plugged into mains.