Human: How to get rid of a septic tank smell? Assistant: 
The first step is to make sure the area around the septic tank is free from food scraps and other debris. This can help reduce odors in the air. 2 You can also try adding activated carbon or charcoal filters to your home's HVAC system, as these will absorb any bad smells. 3 If that doesn't work, you may need to hire a professional to inspect the septic tank and clean it out. 4 Finally, you can use an odor eliminator like baking soda or vinegar to neutralize any remaining smells.