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Cars already have those, but they release auditory rather than olfactory insults when stolen — they're called car alarms. They do sometimes trigger on a false p

Cars already have those, but they release auditory rather than olfactory insults when stolen — they're called car alarms. They do sometimes trigger on a false positive and misfire, but the owner can quickly override and fix the problem instantly. Good luck overriding a misfired "fart spray".

bityard 3y ago
> They do sometimes trigger on a false positive Sometimes?! I live in a suburb near a city and hear a car alarm just about every day. I have never once heard one set off because the car was being stolen.
- djmips 3y ago
  Car alarms need to be retired. All they do is annoy people on ferry crossings etc.
- ptmcc 3y ago
  Literally nobody pays attention to car alarms because they are 99.9% false positives. They're a nuisance that do more net harm than good.