Forewarning: I'm not sure which part exactly is the bug, the tooltip says the heavy wire can't be ran through wall and floor tires and doesn't mention the deodorizer. Also, I'm playing modded ONI.
Issue: Deodorizer can't be built on heavy version of wiring
Issue: Standard wiring can be upgraded to heavy wire behind Deodorizer despite building restrictions not allowing it. Or you can just add heavy wire after building.
1. Deodorizer doesn't allow placement over heavy wires, so place one right next to the wire.
2. Connect to it using standard wiring.
Or just drag heavy wiring over the deodorizer.
3. Drag heavy wiring over standard wiring to upgrade.