I originally heard this from Dave Cullin during his examination of Covid policies, but I can't quickly find the piece that I originally heard it from, since it was over a year ago.

However, this isn't something that's unheard of, and there's a reason why Alex Jones was freaking out about 'puttin' chemicals in the water'

I think this was the original story

Key section:

Parker Crutchfield: Associate Professor of Medical Ethics, Humanities and Law, Western Michigan University

...

Moral enhancement is the use of substances to make you more moral. The psychoactive substances act on your ability to reason about what the right thing to do is, or your ability to be empathetic or altruistic or cooperative.

For example, oxytocin, the chemical that, among other things, can induce labor or increase the bond between mother and child, may cause a person to be more empathetic and altruistic, more giving and generous. The same goes for psilocybin, the active component of “magic mushrooms.” These substances have been shown to lower aggressive behavior in those with antisocial personality disorder and to improve the ability of sociopaths to recognize emotion in others.

These substances interact directly with the psychological underpinnings of moral behavior; others that make you more rational could also help. Then, perhaps, the people who choose to go maskless or flout social distancing guidelines would better understand that everyone, including them, is better off when they contribute, and rationalize that the best thing to do is cooperate.

...

Another challenge is that the defectors who need moral enhancement are also the least likely to sign up for it. As some have argued, a solution would be to make moral enhancement compulsory or administer it secretly, perhaps via the water supply. These actions require weighing other values. Does the good of covertly dosing the public with a drug that would change people’s behavior outweigh individuals’ autonomy to choose whether to participate? Does the good associated with wearing a mask outweigh an individual’s autonomy to not wear one?

Be sure to click on some of the links he provides.

The key philosophical danger here is:

• This is an ethicists claiming that morality is not only something that can be objectively measured, but is objectively measured along the framework of Utilitarianism
• This is an ethicist who is using Utilitarianism to entirely reject individual autonomy, an explicit violation of consent, with the purpose of creating compliance to authority, regardless of harm to the individual.