Ozone can mask smoke odor by chemically altering it, but ozone itself is a lung irritant the EPA explicitly warns against indoors
According to one report, in 2021, annual cigarette sales increased for the first time in 20 years between 2019 and 2020
You have a product that's killing half a million people a year and you put it in the same agency that regulates cancer chemotherapy drugs, you can pull one of those drugs off the market if it kills 10 people, but you can't pull a product, cigarettes, which is the leading tobacco product off the market for killing half a million people a year
There is nowhere else to smoke but inside during the winter on days when its zero degrees
Receding gums, gum disease, tooth decay, and tooth loss can also result