I post one of these every time I change bags for my Sebo. It probably won't do much if the bag fills up, but at least there's a faint smell in the air while I'm vacuuming. I suspect this probably helps eliminate some of the odors in the bag as it fills up more than sending the scent around the room.
Vacuum cleaner Deerma DX700, white
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iRobot Roomba 692: Smart Robot Vacuum with Wi-Fi, π€ Alexa Compatibility, and Pet-Friendly Features for Effortless Cleaning on Any Surface
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Dyson V8 Absolute: The Ultimate Cordless Vacuum for Effortless Cleaning
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Vacuum cleaner Deerma DX118C RU, white/grey
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