Sometimes when I clean the bathroom, I use a mask to protect against detergent fumes because the bleach makes me cough. Nikko hates the mask and starts barking. I put it on sometimes just to freak him out and he will paw at it and sniff at it until I take it off. Then he will slobber my face frantically as if to say "there you are mommy." It totally freaks him out when I cover my hands with my face too. Don't know why, but its too funny.