My "issue" was much smaller ...
After starting my first tech job I was sent to visit a government lab in the UK to repair a chart recorder in the early 70's - it was an easy fix, just clean the rails and sliders that the pens rode on and lubricate everything ... the staff in the lab took off for lunch when I fixed it.
I got the job done, went over to the lunch room to tell them it was fixed and they came back an looked at it ... and started getting very upset. Apparently they were monitoring Chlorofluorocarbons and I'd cleaned and lubed the chart recorder with the standard set of aerosol sprays from my kit. All the other chart recorders were oscillating wildly - I'd completely trashed their data for that day.