I don't have any first-hand experience with Atmosklear but totally agree that you need a scent neutralizer . . . not a scent mask.

What I have had excellent experience with is a similar product called "OdoBan". We left several packages of hamburger in our RV freezer and accidently disconnected both the electric and LP. We didn't check on things for several months . . . not a pretty sight or smell. The OdoBan neutralized the smell and left things smelling pleasant in short order. I highly recommend it.

Russ