Perfectly fine for a boardroom to approve sending a low quality version of their baby formula to countries with low regulations and better quality to countries with more regulations. If the babies want the higher quality kind they should move to a better country!
Tell your boss you’re sorry for leaving early and you have some “stuff” going on at home but that it won’t impact your work schedule anymore. If coworkers bring it up just ominously repeat that you’ve got some “stuff” going on. Maybe you just lost your dog with cancer, they don’t know and probably already assume your reaction was about something more than spelling. Laugh off everything else they might say.
PS: I have a masters degree and still can’t spell well in English— it doesn’t have a consistent phonetics.