[jcranmer]

Because people see "wear standard PPE" in an MSDS and think "it's unsafe if you're not wearing a hazmat suit!" and not "this is safe." Here's the MSDS for good old table salt: https://fscimage.fishersci.com/msds/21105.htm

Quoting the PPE section:

> Personal Protective Equipment

> Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.

> Skin: Wear appropriate protective gloves to prevent skin exposure.

> Clothing: Wear appropriate protective clothing to prevent skin exposure.

> Respirators: A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.

This is table salt. The thing you keep in a salt shaker on your kitchen table. If even this has "wear PPE" in its section on what to wear for PPE, then you can infer that literally every single chemical will at least advise you to wear something.