am in the cleaning and restoration industry.ozone and chlorine dioxide and many other suggestions here might work but the most important thing is that you have to treat the source for it to work.A professional grade black light could have helped you find the source easier before your contractor painted and installed new flooring.If it is very strong odor  the proper way to do it is find source,treat,clean everything and then chlorine dioxide or ozone.

I flip fire-damaged properties and own a restoration company which specializes in fire damage.

Then move forward with a restoration company or trusted contractor who can help you dry out the place starting tomorrow (or ask your existing contractor for recommendations).

Relocation companies, insurance companies, and damage restoration companies are good options also.

Plumbers come the next day and make a bypass so that heat is restored (400$ service call).

Learn what you can for free and ignore the rest." Or

Ten to twenty percent of the whole restoration expense is a typical contingency proportion.Local real estate agents can supply you information on the most valued improvements in your area.

It had water damage and mold but professionally restored.

Restoring this property to a "like new" condition, move-in ready for a buyer What was the outcome?

Our goal is to restore that hope by providing a space that values genuine connection and collective growth over profit.