An ozone generator creates negatively charged ions which then adhere to the positively charged ions in the air which in turn drops them to the ground.(or vice versa).People generally use them to rid their homes of odor. There is a small amount of benefit to the plant as it is able to used the ions it creates. However, long term exposure to these generators is detrimental to your health, what eventually happens is it strips the healthy mucous that forms in your nose and throat, without this mucous people are more likely to get sick and illnesses like strep throat and colds. (I used to sell ozone generators for a previous employer.)