Yes, you can get rid of a dead body smell. While the smell itself may not be harmful, it certainly is not pleasant, either. Your body is naturally inclined to feel disgusted by the smell of death, and unfortunately, it’s highly sensitive to this smell as well.
Typically, after a professional cleaner has sanitized and deodorized an area, the smell will be significantly reduced if not completely gone. For any minor lingering smells that may be in the air, you can set bowls of baking soda in each room affected by the smell. This will absorb and neutralize any leftover, harmless odors.
In some cases, faint lingering smells are more a symptom of the mind convincing your body that it smells something when it doesn’t, because memory and smell are linked together. Recent memories of the death or recalling a memory of the death can lead you to smell the dead body, even if you hadn’t smelled it a moment before.
If the smell persists or gets stronger, you should contact the cleaning company again and follow their advice as this could mean that there is remedial sanitization or deodorization that needs to be performed.