A few questions. What are you smelling, the airlock? Or, are you opening up the fermentor? I had a beer recently that smelled like wet dog in the container that was at the end of a blow off tube. It worried me for a day until I cleaned it out and then it smelled fine. It's hard to expect that yeast giving off by products and esters in the beginning stages is always going to smell good. I notice when I take my lid's off primary in plastic for beers, meads or ciders that the smells are very acidic and strong odors are inside that about knock me over if I take a big wiff. I wouldn't worry too much and if it is in glass, expect that primary will lasts up to 30 days depending on how much honey and the type of yeast. Mine usually clear in secondary crystal clear by the 2nd month and that's when I like to add my German apricots. Yum!!
Good luck and let us know how it turns out. I love meads, you just have to be careful and not consume too much in one night. The stuff can sneak up on you easily. Ask me how I know? I tend to drink them after heavy Belgians and I get loopy.
Almost forgot, did you use Yeast nutrient? Very important in meads.
