We were thinking hydrogen-sulfide producing bacteria (thanks google).  

I also had the documentation in case there was issues with the future buyer.I use a product called Serum which is hydrogen peroxide based.

Intel is a great example, who is building the largest chip manufacturing plant in the US right here, and it will be a $20 billion dollar investment that brings a few new thousand jobs.https://www.dispatch.com/story/business/2022/01/21/intel-ohio-building-computer-chip-factories-licking-county-jersey-township/9173472002/ Another example of economic growth is the upcoming Ohio State University Wexner Medical Center Inpatient Hospital which is a 1.9million square foot hospital that will bring over 800 new beds and a thousand new jobs. https://abc6onyourside.com/news/local/new-osu-hospital-expected-to-transform-health-careHere are a few more recent investments https://www.10tv.com/article/money/business/hydrogen-power-company-hyperion-bringing-700-jobs-to-columbus/530-25907aab-5517-4661-a9f3-d2ed2d5be6b0 https://news.wosu.org/news/2022-02-08/rumpke-to-build-50-million-recycling-facility-in-columbus Check out The Complete Guide to the Columbus, Ohio Real Estate Market which goes through the Columbus, Ohio market in depth and will give you a better scope of where the highest levels of growth are taking place and where to look to invest.

Does hydrogen peroxide work on human urine?

I was just reading that Hydrogen Peroxide, Baking Soda and Vinegar are all ammonia neutralizers.

With the hydrogen bomb and missile threat and instability in the administration I am surprised many think everything is going well.

When mixed with water, it becomes concentrated hydrogen peroxide.

Go over with a spray bottle filled with hydrogen peroxide and water or bleach and water (the hydrogen peroxide is better at permanently dealing with the issue), spray, wait, show them it's gone. 

@Kenneth LaVoie Cat urine is terrible but here is how Ive gotten rid of the odor and its literally such a cheap dumb thing. 1 part hydrogen peroxide, 1 part baking soda, and a little bit of dawn dish soap.

They use hydrogen peroxide then dry and encapsulate with a clear spray paint.