Filou is like that.
When he was a baby he scared me terribly when he started heavy breathing, all his little body was shaking. And of course Saturday night. It became better slowly so I decided to wait until the next morning before I got to the vet.

Then I found what he had eaten: a chili which I had been cooking with the Bolognese sauce but had put out before serving. It had been on the kitchen counter!

Ok he survived without any problems, didn't need a vet and can still be found in the kitchen eating spicy Indian or Tex Mex food out of the pot

Pouncer got a very good name for him