This is totally healthy. Totally.
From a flight attendant with an anonymous airline on a layover. There are many possibilities about how it got there, but as with Trivial Pursuit, your first guess is probably the right one.
From a traveler at a Pittsburgh airport hotel on a sleety night. She eventually used a washcloth to cover her finger tips when she turned the heat on.
At a hotel in Buffalo where the windows were last Squeegee’d before people knew what a Squeegee was.
An unbelievably filthy vent in a Best Western bathroom in Minnesota.
From a vacationer in Alaska who complained to the front desk because the room was too hot and the AC wasn’t working. He left, came back and the air conditioning was on and a Winter’s-worth of built up dust had blown all over the room.
Found by a flight attendant on layover. She says that it really perked up her 6 hour stay.
From a woman who was taking her daughter to look at colleges in the “general Boston area”. Left her laptop on the desk and after three days they checked out and she could see just how much dust was floating around.