Another issue with chloramine can, under the right conditions, detonate. It's more than a health risk.
The formation of chloroform, while accurate, is a bit less concerning because chloroform is both insoluble in & denser than water, so a buffer layer of water provides some protection. Still unwise, because even without the reaction concerns, mixing the 2 doesn't really make an effective cleaner. It's a complete waste of time.
The peracetic acid concern is misplaced. Household peroxide is far too dilute, and so is the acetic acid in vinegar.
The reaction becomes concentration limited, plus at low concentrations the reaction requires a strong acid to initiate/catalyze the reaction.
While non-knowledgeable people shouldn't mess with peracetic acid, (yes, I've used it and other organic peracids) this is extremely unlikely (read as nearly impossible) to occur using standard household products.
The bleach & vinegar is a valid concern, though the low concentrations of acetic & hypochlorite in these household products is awfully low, hence only a tiny amount of Cl2 gas is formed. But, a little chlorine is a lot without appropriate PPE.
IOW, they shouldn't be mixed even though it's not an aggressive reaction.
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