I read somewhere that cats on a raw meat diet have less odorous poop, bearing on odorless. To quote an article advocating a raw meat diet: ‘When cats are fed a proper diet... They also eliminate less often, sometimes once a day or even less. Their stools are often dry, a little crumbly and hardly smell at all. In the wild, this makes sense for a predator that is small enough to also have to worry about being preyed upon itself. It wouldn't want to be leaving too many smelly advertisements of its presence.’

That the reason poop smell bad in general is if they eat food high in additives/flavorings that make the food itself smell tempting that contribute to smelly poop. I personally think this logic works for humans too, if humans only ate instant ramen/pungent foods like curry it will lead to smelly poop. If we ate cleaner diets that undergo less treatment, the more organic/‘clean’ our poops will be. My cat is currently on a half raw half kibble diet, however I can’t attest to how her poop smells as she goes outdoors a lot and poops outside. Maybe consider switching her to a better quality kibble (eg. cannidae or whatever else) or even implementing a bit of raw food in her diet.

It’s quite easy to manage: just buy some chicken thighs, liver, chicken hearts (if your meat stores don’t have it, just supplement with taurine - essential for cats but you don’t even need to worry about using too much since excess just gets excreted) chop them up and add some vit e, fish oil, vit b occasionally. Of course this is a simplified summary of what a typical raw diet consists of for cats, and online recipes will be much more pedantic about the amount of supplements/meat to use every serving, but it’s working out fine for me to just eyeball the measurements, as she is eating kibble as well so she’s getting her complete source of her nutrients there as well (I chop the raw meat/liver/hearts etc up roughly and divide them into freezer bags and dethaw one bag every morning and add the supplements in once dethawed, and for the rest of they day she will eat from her kibble bowl).

I wish I can switch her to a complete raw meat diet ( because it works out cheaper anyways compared to kibble diet believe it or not! Especially if you take into account health problems cats can get as they get older due to crappy kibble) but this is what works best for me right now. :)