We had an old type many years ago. It had an enclosed type thingy on the bottom that collected the water and had to be emptied after each load. it had a filter for the lint. It was intended and designed to be used like that. A regular dryer is not designed to be used without an outside vent. Too much moisture will cause mold and eventually rot the wood in your house. You will get lots of dust, will be shocked at how much. Do not do this with a gas dryer, carbon monoxide poisoning can kill without you knowing it.