Some professionals have used ozone for years to rid of bad smells such as from bad air, mold, animal and human decomposition smells from rooms.
Ozone is effective but it must be used with care. We shouldn't be in the room if we use the ozone.
I tried ozone generator on durian odour on customer's Elgrand, and results were not impressive.
When any car carpet is soaked for a long time due to leakage, theres a horrible smell.
OZ was used in such a vehicle, and the stench was still there.
But when a big Plasmacluster was running inside the same vehicle throughout the nite, the stench was gone the next morning and did not return. Its bacteria that caused the odour, and when bac is dead, the stench stops.