I didn’t realise my mum had used vinegar to descale our kettle too. All I knew was “something smells of vinegar here” and that “oh, good, there’s hot water already in the kettle!”

I used that hot water to make up a formula bottle for my then 3 month old. Thankfully, I always do a double temperature test - drop on the wrist and then a drop on the tongue.

Thanks to that I figured out what the vinegar smell was… and didn’t subject poor baby to drinking vinegar milk.