sometimes dampness does
You do not have to vent the hot tub; but if you don't there will be a lot of dampness in the room.
Why do you want to? If you have a field stone basement the whitewash controls dampness, inhibits mold growth and brightens up the place. I would research this more before attempting to remove it.
just remove them
Humidity
no,it cannot
yes it is because it means u mean something and dampness means to get something do something or mean something
That would be hard to say as there is no such thing as dampness rheumatism. Suggest you find out what sort of arthritis you have prior to treatment.
yes they do sometimes
yes
dampness
Remove all food items from the room, then clean the room and spray with insecticide.