You could spend tens or hundreds of millions building an automatic system (certification for aircraft is not cheap or easy) or just hand the flight attendant a can of spray.
Sure, but I can imagine the more expensive airlines worrying that the ‘optics’ of spraying your passengers down aren’t great (to be clear - I’m not objecting and I’d rather they do it). I wasn’t suggesting they retrofit to existing aircraft of the period, but rather just build it in as they design the next generation airflow system. Or do you think it would still be way too expensive even then?
Sure, but I can imagine the more expensive airlines worrying that the ‘optics’ of spraying your passengers down aren’t great (to be clear - I’m not objecting and I’d rather they do it). I wasn’t suggesting they retrofit to existing aircraft of the period, but rather just build it in as they design the next generation airflow system. Or do you think it would still be way too expensive even then?