if he is that upset about it just buy liquid chlorine from the pool store. If you have a local mom & pop pool store near by it can be cheaper and more convenient than bleach in the grocery store. My local pool store has 12% bleach and gets fresh shipments often and you can get them 4 gallons to a case. It means less bottles/trips and it's cheaper to boot. I guess it depends on your pool store though.

It might be a good idea to go to the pool store and get 1 gallon of 12% bleach and then get 1 gallon of clorox unscented from the grocery store and show him the ingredient labels on both. If he is still not sold then I guess you are stuck.

good luck.