This 2020 cell study investigated antibiotic effects of broccoli sprout compounds:

“In this work, we asked whether isothiocyanates (ITCs) could act synergistically with each other to increase antibacterial effect. A set of aliphatic ITCs, such as iberin, iberverin, alyssin, erucin, sulforaphene, erysolin, and cheirolin was tested in combination with sulforaphane against E. coli.

All tested ITCs exhibit strong antimicrobial effect individually. Synergistic action observed for iberin, iberverin, and alyssin led to minimal inhibitory concentration necessary for antibacterial effect four- to eight-fold lower than for individual ITCs.

Effectiveness of antimicrobial effect is correlated with both type of ITC used and bacterial growth conditions. The combination of several fold lower concentration of ITCs gives a similar effect as much higher amounts of individual ITCs.

Antimicrobial action of sulforaphane analogs was impaired by specific amino acids. Antibacterial effect of ITC treatment is related to stringent response induction, which is triggered by amino acid starvation.

The use of ITCs as antibacterial agents can be advantageous, as there are very few examples of bacterial resistance to these compounds.”

https://www.frontiersin.org/articles/10.3389/fmicb.2020.591802/full “Induction of the Stringent Response Underlies the Antimicrobial Action of Aliphatic Isothiocyanates”

One of this study’s references was the 2016 Relationship between Chemical Structure and Antimicrobial Activities of Isothiocyanates from Cruciferous Vegetables against Oral Pathogens which found that broccoli and red cabbage compound indole-3-carbinol and mustard compound benzyl isothiocyanate were even more potent antibiotics than half of the aliphatic isothiocyanates in this study:

Our ancestors evolved to deal with everyday bacteria, viruses, and other pathogens. Not sure about the current virus developed to herd humans into an agenda.

Train your immune system every day! disclosed that I was in Milan, Italy on the same February 22-23, 2020 weekend that ten towns were closed south of Milan. I’ve never experienced any symptoms.

• One factor in immune response was that fifteen years previous, I’d taken daily steps with yeast cell wall β-glucan to guard against the phenotypical immune system collapse of old age.
• Another factor was that I’d ridden the filthy Washington DC Metro twice a day to-and-from work for years, and had already been exposed to who knows what.

Treat your gut microbiota well. Give them what they want – including cruciferous sprouts – instead of prescription antibiotics, and expect reciprocity.