Shopping trollies are designed to safely sit one toddler, which I did. If my older toddler got cranky, she was plonked in amongst the germ covered shopping which, I am sure had as many germs on the packaging as were on the trolley.
I am from the school of thought that immunities must be built up and being too clean leaves us open to infections.
I don’t have a problem with children in trollies.
Orchids and other lovely plants that don’t need a lot of attention



. Nevertheless, if we all run scared of germs and other nasties, we would never build up immunities of any sort. Obviously we have to be more careful in a pandemic, but otherwise, it's best not to think too hard, and keep a bottle of sanitiser in your bag.