, because the wrong choice of words may get some desperate people to self-medicate, as apparently already happened here.

What is so funny to me is that Disinfectants are antimicrobial agents designed to inactivate or destroy microorganisms.

A big deal has been made about the President mentioning injecting disinfectants.
Disinfectants are currently being used in injectable vaccines.

Disinfectants are used in vaccines to kill bacteria that is in the formulation.

Two examples are:
Thiomersal is a well-established antiseptic and antifungal agent.
The pharmaceutical corporation Eli Lilly gave thiomersal the trade name Merthiolate.
It has been used as a preservative in vaccines.

Formaldehyde is used to inactivate bacterial products for toxoid vaccines.

Neither of these are 'bleach' but the President did not mention bleach, that was something mentioned by a reporter.
Both of the chemicals above are in low doses, they are both actually disinfectants used in vaccines.

I don't think anyone is recommending self-medication by injecting anything that is not approved by a doctor.
Some drug addicts may disagree.