Ozonation is one of the many methods used for the disinfection of water. It is a technology substantially more effective than others. 

Ozone is very possibly the most powerful and effective eliminator of smoke and odors. Ozone Eliminates tobacco smoke, its impurities or Phenol gasses, and odors from cooking, pets, mold, mildew and often the sources of household odors. Disinfecting and purifying with ozone provides a much healthier home, atmosphere and environment.