It is death.
Convenience Stores come and go at alarming rates. Some abandoned after only a few years, while others hang around for decades. Those older stores have a particular combini smell.
Not all, but some have a smell that takes me back to the wondrous convenience stores of my twenties in Tokyo. A mix of old cooking oil, microwaved meals and something I can’t quite put my finger on... toiletries? Nevertheless it’s quintessentially combini. When you think about it, it’s actually pretty disgusting, but I savour the memory trigger.