As a general note, room air freshener sprays do nothing to freshen the air in your room. For that, you must remove the pollutant source and introduce cleaner air.
Overall, I'd almost always rather smell the actual thing being covered than the smell of it being mixed with air freshener, and I assume, bacteria contamination aside, it's a lot healthier not to breath in whatever the fresheners are giving off
with that said, activated charcoal (which my purifiers include, though undersized) is more suited to smells (molecular size) than hepa filters (particulate matter, which is generally much larger) are. hepa in the bathroom would deal with airborne bacteria but not the poo smell, which would require activated charcoal (a lot of it, along with an uncomfortably powerful fan) to be really effective.
It's at least conceivable that there would be less noxious options available than ozone. An old trick is to use vinegar, seems to work.
> 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.
Just pick up a vivosun carbon filter on Amazon for $100, they're ugly as dirt and made for people growing weed - but turn it on for an hour or so and it'll remove most VOCs (smells, gasses, etc.) and particulate in your air. Problem solved.
From what I understand, activated carbon works really well for both particulate and VOCs but, unlike say HEPA filters (or non-HEPA cheap HVAC filters), it cleans the air after many cycles. So the amount of air passing through it, and how many times it passes through it, matters a lot.
I think HVAC activated carbon filters are likely to let more particulate get to your HVAC unit, which is not good for it, and will not clean as much due to HVAC not moving as much air as these portable units.
But I'm just an amateur airhead.
I am highly doubtful that ozone in safe concentrations will do anything. Even at unsafe but not immediately threatening concentrations it probably does nothing.
It didn't cause any health issues as far as I know, but in retrospect, I really wish regulators and/or my parents would have prevented that from happening.
So if you can smell it, that's probably not great.
[0]: https://www.washingtonpost.com/news/speaking-of-science/wp/2...
That's how febreze is supposed to work:
>As Febreze dries, more and more of the odor molecules bind to the cyclodextrin, lowering the concentration of the molecules in the air and eliminating the odor. If water is added once again, the odor molecules are released, allowing them to be washed away and truly removed.
Source: https://www.thoughtco.com/how-febreze-works-facts-and-chemis...
But most stuff I've seen used just is a stronger but more pleasant odor like citrus that becomes the thing you smell.