Ozone has its detractors, but negative remarks come from those promoting other systems.  Ozone is a proven technology.  It is widely used in industry.  Pig and chicken farms use ozone in the air exhaust to destroy those strong odors.  Municipal sewer treatment plants also use ozone in the exhaust stack to cancel odors and keep neighbors breathing easier.  You may not know that biotrauma companies use ozone as a regular part of their service to deal with some horrific smells.  So, the question about ozone has already been answered.  Ozone is an excellent odor elimination tool that does not require the introduction of other chemicals.  

All Ozone is the first to introduce the hot, new, and powerful 10G ozone generators with the matching honeycomb pales.  Way better than the 7G used in other equipment.

Ozone is used in the back rooms of funeral homes, kennels, and even hoarder homes to cancel the worst of smells.  Any failure of ozone generally comes from over-hyped ozone machines that are simply not able to do the job.

For vehicles, apartments, hotels, and condos; the 20000 ozone generator is a good choice.

For professionals, a serious ozone generator, the 40000 and 60000 are the best choices.