A steam vaporizer, or warm-mist humidifier, uses electricity to power a heating element. It boils water and creates steam. The steam cools down before it leaves the machine, enters the air ...

Specific safety measures will depend on the type of machine you choose — a vaporizer or a cool-mist humidifier. These were the earliest devices used to humidify indoor air. Vaporizers create ...

The machine pumps pressurized oxygen through a hose over a small amount of liquor in a canister held by the customer, who sucks up the vapor. Over the weekend, after charging people $10 a pop ...