hey everyone, i'm having a weird smell in the bathroom and i can't figure it out- here's hoping someone smarter than me has some advice . basically, my bathroom has very recently started to smelly very musty. two things have changed that might be the cause. i recaulked the tub about a month ago, and the first round didn't take very well. we ended up with a bit (a few drops) of water getting under the tub and into the kitchen ceiling. i resealed it and we've seen no water since. secondly, a few days ago we had a clogged sink. my wife used some draino (or equivalent- can't remember the brand), and the clog is gone. today though, the bathroom smells very musty, and i can't tell where it's coming from. i'd say i really pooched the caulking, but there's no visible dampness, and the one time there was we saw it right away. can the draino be the culprit, and perhaps the smell is material rotting in the drain? any help would be very much appreciated- i'm at my wits end with that bathroom . thanks!