Macroviruses used to be the big thing, and Excel was particularly susceptible.
The laptop went into 'isolation' when the glitch was discovered, just because the 9 other computers around here are enough of a headache without 'sharing' problems.
I'm glad the problem appears to have been as you said, just a glitch, but under the circumstances, to not take precautions and assume the worst would be inviting disaster.
I don't. Because, 99% of the time, it's just a headache.
And with computers, it is usually user error. Or as we call it in the biz: an ID10T error, or PEBKAC (Problem Exists Between Keyboard and Chair).
The distant second is a software failure. Although it does happen more often than it should on Windows machines.
Hardware failures have become so rare that most people forget they can happen. However, the devices that are susceptible to wear (i.e. mice and keyboards) still wear out.
Macroviruses used to be the big thing, and Excel was particularly susceptible.
Macro viruses haven't been a problem since Excel and Word disabled macros by default. If you are still running a version that doesn't, you really should upgrade.