I was looking at the chart of Sars1 at various temperatures and the hotter the better.
They tested it at 5 degree increments and while it really shoots up over 110 degrees, there is still a difference between 70, 75, 80, 85, etc.
When my tenants left my rental property in Florida, I cranked up the thermostat to 85 and let it run a day at that. I put in a wifi thermostat, so I changed the temp remotely.
Did they have CV? Probably not. Did it make any difference? Probably not. Did it make me feel better? Yes :). I also had my sister wait 4 days before she entered the house, just to be sure.