For the entirety of my life, we've hung or clothes to dry inside. No dryer. No, they don't smell bad. Yes, even with small kids in the household. No, there is no problem with mold. No, it doesn't take forever, I'd estimate twelve hours most of the year, depending on how fast you spun them (typically 1200+ rpm).<p>Yes, the evaporating cools down the room, though I can't say I ever noticed it. In terms of energy efficiency compared to a dryer, it's much better in summer, and not much better in winter, though you get a humidifier as a freeby.<p>Yes, it's a chore, a full load takes about ten minutes to hang, and it's real boring work.