Which method does NOT typically fall under odor removal techniques?

In the context of odor removal techniques, air fresheners are primarily designed to mask odors rather than eliminate them. They work by adding a scent to the air, which can temporarily cover up undesirable smells, but they do not address the source of the odor itself. This makes air fresheners less effective in a true odor control context, where the goal is to remove or neutralize the underlying causes of odors.

On the other hand, methods like thermal fogging, activated charcoal filters, and time-release counteractants are all focused on significant odor removal. Thermal fogging involves the use of heated fogging solutions that penetrate materials and neutralize odors from within. Activated charcoal filters work by adsorbing odor molecules from the air, effectively trapping them and reducing the overall odor concentration. Time-release counteractants are designed to gradually release agents that neutralize odors over time, targeting the source and providing lasting relief.

By understanding these distinctions, it's clear why air fresheners do not align with the true methods of odor removal, while the other options do.