I wasn't saying chemicals are soluble in water.
Because the water doesn't filter everything what's in the tobacco and because fruittobacco has the same chemicals as cigarette tobacco it's still as dangerous as smoking a cigarette. Usually a shisha session lasts for about an hour, but what I meant to say was that when you smoke it by yourself you will get the same amount of smoke as smoking 60-80 cigarettes. Excuse me for making this mistake.
When smoking shisha you will inhale more smoke, and because the smoke is cool you tend to inhale deeper than when you smoke a cigarette. When adding tea to the waterreservoir you will reduce a small amount of chemicals entering your body.