A small capsule of ammonia taped to this Los Angeles dentist machine -a respiratory stimulant positioned for use in patient emergencies. For every task flow – what needs to be ‘to hand’ for what kinds of emergencies?

How will the ‘positioning of things’ evolve in our future perfect? Taking just one facet of our future lives – as our understanding of bacteria evolves we may well decide that its prudent to have particular kinds of bacteria on hand/foot/scalp/… (or indeed in our throat/stomach/urinary tract) to be called upon at a moment’s notice. What’s the bodily bacterial equivalent of taping ammonia to an apparatus?