Well, the handyman came today. He claimed not to smell anything (and,
in truth, the smell was not particularly pungent when he came). He
checked under and around the sink (it is a pedestal sink) for mold, but
found nothing. He then checked under the hot and cold faucet handles
and found some "debris," but nothing that seemed related to the smell.
The aerator was fine. Sure enough, once he left, the smell began to
emanate when I turned on the cold water faucet (although I should note
that it usually dissipates after the water runs for a while). Still,
what is curious to me is that when I first turn on the faucet,
sometimes the smell is there, and sometime it isn't. I'm inclined to
think that it's the sink. As long as I'm just dealing with the
annoyance of a transient smell, I'll just pour some bleach down the
drain and through the overflow holes (as an earlier poster suggested)
and see if that takes care of the problem. Any idea how much I should
use? As always, thank you for your feedback.