Yes! It's a very unique odor but I recognize it right away. We have stayed on both FL coasts and don't always smell it. We stayed at a Hilton in Seattle and it was really strong. It was only a 2-night stay prior to an Alaskan cruise and the whole hotel smelled that way so we didn't bother moving.
Ironically, despite cruise ships being on the water all the time, we've never smelled mold on a cruise ship in almost 40 cruises. (32 on
DCL and 7 on 4 other cruise lines.)
I think it's all in the housekeeping.
I'm surprised a CM would bring a humidifier to a room that smells like mold. That would only make it worse. Mold grows in damp, dark places so if anything, a
dehumidifier would help.
We went to Ireland for our honeymoon in 1995 and their mold levels are much higher due to all the rain and I think them burning peat made my allergies worse too. In all the jet lag and day napping when we arrived, I forgot to take my allergy meds. (Seldane, back then.) I woke up at 10 pm, my throat was feeling kind of tight and it wasn't so easy to breathe. A thousand throughts went through my brain about what if I need to go to their ER and how much it would cost. I took my medicine and felt better in 2 hours. I've learned to keep them better under control.