Airthereal B50 Mini Ozone Generator, Plug-In Design, 320 Sq Ft, 2-Pack

These work excellent for small to medium rooms I run them once a week (we do smoke) it clears the odors freshens our bedrooms, be aware you do need to ventilate afterward and if you do not like the smell of ozone (smells like the sunshine used to years ago!) it dissipates quickly.

Seems to work really well and just as good as the $200 one we had before it.

WORD OF WARNING: All ozone generators are meant to only be used in unoccupied spaces. Don't let people and pets enter the area until 30 minutes after ozone generation ends. Not available for sale in California; EPA Est. No. : 99066-CHN-1. Manufacturers and vendors of ozone devices often use misleading terms to describe ozone. Terms such as "energized oxygen" or "pure air" suggest that ozone is a healthy kind of oxygen. Ozone is a toxic gas with vastly different chemical and toxicological properties from oxygen. Several federal agencies have established health standards or recommendations to limit human exposure to ozone. The phrase "good up high - bad nearby" has been used by the U.S. Environmental Protection Agency (EPA) to make the distinction between ozone in the upper and lower atmosphere. Ozone in the upper atmosphere--referred to as "stratospheric ozone"--helps filter out damaging ultraviolet radiation from the sun. Though ozone in the stratosphere is protective, ozone in the atmosphere - which is the air we breathe - can be harmful to the respiratory system. Harmful levels of ozone can be produced by the interaction of sunlight with certain chemicals emitted to the environment (e.g., automobile emissions and chemical emissions of industrial plants). These harmful concentrations of ozone in the atmosphere are often accompanied by high concentrations of other pollutants, including nitrogen dioxide, fine particles and hydrocarbons. Whether pure or mixed with other chemicals, ozone can be harmful to health. for many of the chemicals with which ozone does readily react, the reaction can form a variety of harmful or irritating by-products (Weschler et al., 1992a, 1992b, 1996; Zhang and Lioy, 1994). For example, in a laboratory experiment that mixed ozone with chemicals from new carpet, ozone reduced many of these chemicals, including those which can produce new carpet odor. However, in the process, the reaction produced a variety of aldehydes, and the total concentration of organic chemicals in the air increased rather than decreased after the introduction of ozone (Weschler, et. al., 1992b). In addition to aldehydes, ozone may also increase indoor concentrations of formic acid (Zhang and Lioy, 1994), both of which can irritate the lungs if produced in sufficient amounts. Some of the potential by-products produced by ozone’s reactions with other chemicals are themselves very reactive and capable of producing irritating and corrosive by-products (Weschler and Shields, 1996, 1997a, 1997b). Given the complexity of the chemical reactions that occur, additional research is needed to more completely understand the complex interactions of indoor chemicals in the presence of ozone. ozone does not remove particles (e.g., dust and pollen) from the air, including the particles that cause most allergies. However, some ozone generators are manufactured with an "ion generator" or "ionizer" in the same unit. An ionizer is a device that disperses negatively (and/or positively) charged ions into the air. These ions attach to particles in the air giving them a negative (or positive) charge so that the particles may attach to nearby surfaces such as walls or furniture, or attach to one another and settle out of the air. In recent experiments, ionizers were found to be less effective in removing particles of dust, tobacco smoke, pollen or fungal spores than either high efficiency particle filters or electrostatic precipitators. (Shaughnessy et al., 1994; Pierce, et al., 1996). However, it is apparent from other experiments that the effectiveness of particle air cleaners, including electrostatic precipitators, ion generators, or pleated filters varies widely (U.S. EPA, 1995). Ozone has been extensively used for water purification, but ozone chemistry in water is not the same as ozone chemistry in air. High concentrations of ozone in air, when people are not present, are sometimes used to help decontaminate an unoccupied space from certain chemical or biological contaminants or odors (e.g., fire restoration). However, little is known about the chemical by-products left behind by these processes (Dunston and Spivak, 1997). While high concentrations of ozone in air may sometimes be appropriate in these circumstances, conditions should be sufficiently controlled to insure that no person or pet becomes exposed. Ozone can adversely affect indoor plants, and damage materials such as rubber, electrical wire coatings and fabrics and art work containing susceptible dyes and pigments (U.S. EPA, 1996a). When inhaled, ozone can damage the lungs. Relatively low amounts of ozone can cause chest pain, coughing, shortness of breath and, throat irritation. It may also worsen chronic respiratory diseases such as asthma as well as compromise the ability of the body to fight respiratory infections.

Nice to have control Full on is pretty strong smell of ozone 1/2 is great for odor control

*UPDATE: 10.07.25. Adding a video of the sound. This is the quieter sound. It gets louder. I don't have time to keep bumping them to make it stop. I'm dropping another star. I don't recommend. (Sorry. It's not letting me add the video right now. I don't know why. I'll try later.) *UPDATE: Writing on 09.27.25. I've been meaning to update for at least a couple of months. I'll leave my old review, but I'm changing the stars. These lost their power shortly after I started using them. I always had one in my garage, and I have one in a guest bedroom where I keep boxes. I like their portability and use them to keep the smell of cardboard away, use in the kitchen while cooking to get rid of food smells, and sometimes in a bathroom when cleaning as it helps remove the chemical cleaner smell. But these aren't keeping up. It seems like they've lost their initial ozone power. If I put my face close to it, I can smell it, but they're just not keeping up like the last brand. Unfortunately it's past the return point and I'm disappointed about that. Dropping from 5 stars to 2. Original review: So far, so good! I used to buy some that look like this, P L I X I O. I don't know what happened to them. They just weren't working as they were supposed to anymore. But these have been good so far and are creating that 'fresh air' smell. I use these when I'm cooking to neutralize the smell of the food. Not that the food smells bad, I just like a clean air smell. Currently I have one in the garage to keep it fresh in there. It really helps to keep it from smelling like stale cardboard boxes and 'garage'. The other is in a vacant property that I'm moving into. They property management had cleaners come in and spray some awful scent, so I've been working to get rid of that. That also seems to be working pretty well. I don't recall if it has a timer, but it doesn't matter because it would be easy enough to get a separate timer and plug it into that. The thing I like most about this particular style is that I get to control output. It's important. I get to choose if I need a little help or lots of help. That feature alone is worth it.