Years back, one of my neighbours (didn’t know who) had extra bags of garbage every week. (The city will collect two bags per week, extras have to have stickers applied, which cost $1.50 each.)
Every week, I’d have somebody’s extra bags put out behind my house. If I left these there (without putting my own stickers on them,) trash would not be picked up, and the crows would make a damned mess with them. (They used tissue-thin, cheap ass bags - half the time before I knew they were out there, the crows would have the contents strewn all over the place.) Didn’t know where they were coming from, so I couldn’t put them back where they belonged - didn’t want to dump them on another innocent.
What I did was start going through them methodically, trying to work out who was the culprit - but there were never identifying marks. It was easy to see why they always had too many bags - it was mostly take-out food, and disposable dishes. And diapers.
For a couple of months, every time I had an extra bag, I put on rubber gloves and rooted through nasty decomposing food and shitty diapers, looking for incriminating evidence. Each time I found nothing, I rebagged the trash in heavy duty bags and put it in my garage. At the end of the summer, I had more than a dozen of them in there, festering.
Finally, pay dirt! Addressed junk mail. Finally, I knew where those bags belonged. I marched them back onto their back drive way. I took my heavy-duty bags back, though. After a summer of having to clean up their garbage (and having it be my problem,) I thought they deserved a little taste.
It was quite an impressive pile.
I never had any more extra bags in with my garbage. I don’t know if the time they spent having to deal with their own problem encouraged them to cut down a little on their ridiculously offensive waste, if they just knuckled down and payed the extra few bucks per week, or if they just removed my house from their list of dumpees.
(I’m still angry about that.)
…anyway, my guess would be your neighbours may have a similar dish-doing/cooking aversion.