The symptoms are caused by the virus reproducing. At least take cough suppressant.

The rest just makes you feel a little less awful. All the studies show the current OTC remedies don’t shorten illness duration (which conversely means they don’t lengthen it either).

The “evolutionary response” hypothesis is a lesser form of “smart people going with their gut instead of science” - which is partly how we’ve gotten into this mess in the first place.

Smart people seem to get important things wrong quite a lot.