Tldmcl
The spraying is pretty standard in many countries, so I would not read much into that. As you say clean down surfaces and clean your hands. As an aside I always, without fail ,wipe down the seat arms and remotes etc with the hot towels on A/C that you are given on some carriers, and use wipes when not available. It is quite interesting to see how much dirt is on them never mind germs. Interestingly we have a friend who is a commercial pilot who does the same routine in the cockpit as well just because he always did this from RAF days, but no White gloves yet !!
Kind regards
Mr Mac