I hate to say it but I find lots of fellow mums are quite disgusting in how they change nappies in public places will little disregard for how it might make other people gag.
I think No 2s should be attended to well away from other people, not at a restaurant table or by the side of swimming pool! (I know there are not always changing tables - but for goodness sake!)
The other day I was in a playground on a bench by a bin and a mother from some distance, lobbed a nappy into the bin. It wasn't folded into a tight ball but all open and pissy. When I was a nappy-changer, I d have fastened it up and shoved discretely shoved to the bottom of the bin. I went "yuk!" involuntarily as it sailed by my face and she went nuts at me.
I m sorry, your own child's poos and wees are not stomach-churning, but other people's are!