Odour Sensor can be used in toilets , cars or any other spaces . The odour Sensor will be connected to a mechanism with air freshener which will trigger when sensor will sense bad smell up to certain level .
Good. Figure out how exactly you plan to detect odour. Every odour has some predominant gas presence so you can use that specific gas sensor. Start figuring out materials.
TO RE-FILL WATER TANKS AUTOMATICALLY
Urination over toilet seats
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